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I think I will let the first two roll until Wednesday, and the third another week. If she’s still the same spot, she’s done and that’s just that.
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So in the interest of boredom, or maybe slacking off a bit, I thought I would go over a couple of the ideas I have for upgrades during the downtime of the hydro tent.
Hey Vortex, interesting ramble. Good thoughts. My comments are in red.
In no particular order...
Primary Pump
Currently this is a 400gph pump, running in-line. I would like to bump this up to either 600gph or 800gph. With a 50gal capacity (currently) that would move it from an 8x/per hour turnover to 12x or 16x. This would also increase the volume of water from the "waterfall" in each bucket, which means even more O2 going around. There was enough this go around, but a little more would be nice. Had I used 1/2" plumbing instead of 3/4", it would have had a little more force behind it. Oh well, no big deal.
I haven't made up my mind on this one yet, it's still under consideration. This may change or be scrapped depending on other decisions.
By far the most effective way to add oxygen to your solution is airstones and a hefty air pump in the reservoir. I use a pump with a double output in each of mine. The spraying and waterfall effect isn't as effective as zillions of small bubbles, the smaller and more numerous the better so select your airstones for that.
Bucket Height
This is a side effect of the "hump" between the inner bucket and the res, and coming up and over to get in/out of the duct port in the tent. I'd thought about this previously, but wanted to give it a go first. What I've found is that it is a bit of hassle, but nothing serious. Simply an area that isn't bad, but could be better.
If I were to raise the buckets 6", including the reservoir, then I could eliminate the hump all together. I could then cut a new 3" piece of PVC, and have a straight connection.
What the hump does is slow down the flow of water, as well as make it a bit more difficult to fully drain the buckets in the tent without opening them up each time.
If you don't have a level surface for all your connective tubing it's surprising how much a small elevation change can affect water flow. Reduces the efficiency of your pump too. Sounds like raising your buckets/res and flattening everything out will help you, that is, if you have the room to give on the top side.
Drain Line(s)
What I would like to do is put a drain line from each bucket into a main line, then out the tent. The reservoir could also join the main line, drain all at once, and poof.
This could be accomplished in a few ways. A bulkhead through the bottom of each bucket, a line from the bottom of the bucket up and out through the top of the side, etc. Each presents its own unique challenges to be mindful of.
If I were to go up and out, I could use 3/4" pipe and use the current holes for the supply line. This would allow me to reconfigure the supply line and gauge it down to 1/2". I would then make new holes for those line.
This would let me keep the pump the same, and move to a spray bar type exit point inside each bucket. More O2 isn't a bad thing, although that would increase the dB level a bit and may also increase urination frequency when tending to the garden.
Cutting holes for lines that run below the water level is a tricky business that can often result in pesky leaks. The production drills, quality of cuts and grommets that manufacturers use add up to a reliable seal but I have found it's hard to do it on my own. I recommend a lot of the best silicone caulk unless you want to use a lot of paper towels, forever.
Supply Line
I've also taken under consideration for the supply line. Right now it's 3/4", which is fine. I've thought about reducing it to 1/2", which would give the flow a little more oomph hitting the water in the bucket. End result, more O2.
If I were to do this, I may also go to a spray bar type setup, where I would plug the end of the pipe and have 6-8 holes drilled for the water to shoot out. More reaction from the individual streams hitting the water, more O2.
Again, the only really effective way to oxygenate is small-bubble airstones in the main res or in each bucket in DWC. That's a reason I like flood and drain better than DWC because it allows the roots to achieve maximum oxygenation by leaving them exposed to air much of the time, plus you only need one air pump instead of one per bucket.
Also keep in mind if you up the size of your pump, or decrease the diameter of your lines, the pressure will increase and that raises the chance of leaks, and increases the workload on the pump. The best systems move plenty of fluid but don't create much system pressure so try to design with that in mind. Pressure free is the way to be.
Lighting
Let me start off with saying that I do like this light (Growers Choice ROI-E680) overall. I'm not fond that I had an issue, and cannot use the light exactly as intended. Instead I need to cut the power to the light itself instead of the controller just fully dimming the fixture. Plus with the controller on occasion deciding to now wake up from its sleep cycle, I'm just not as confident as I should be with these.
Whether or not I can be refunded at this point, I'm not sure. I doubt it. However (without rehashing it all again) I certainly can get a new one which is supposed to have the glow issue resolved.
That still leaves me with the controller issue. I like the more precise dimming control with the controller, as well as the ease of use for setting the light schedule. (The fixture itself has a dimmer, but it's only 0/40/60/80/100 percent options.) I'm also a fan of the ability to specify a sunrise/set option. I have it set for 30 minutes, and it seems to divide the set intensity of the fixture by that time, and increase/decrease each minute by that number. (So 100% on, for a 30 minute cycle, will adjust the light up/down by about 3%-4% per minute.)
A graduated transition between light to dark periods (simulating nature) has not been shown to enhance yields. Better to chop lights on a precise schedule, full-off or full-on. Though it is cool.
I'm not sure and have to think about this a bit. If the fixture is replaced, that hopefully takes that issue out of play. (If it doesn't, I'm going to be way pissed off.) Still leaves the controller, and I'm not sure where my confidence level is on that. I've had to double check lights on/off every day, and I shouldn't have to worry about doing that. It also means that time away is a gamble right now. I guess I could just not use the sunrise/set option, then if I need to be away I can just put the fixture on its own timer and disconnect the controller.
Why would I do that though? Why should I have to even think of doing so? I shouldn't. Which means my confidence isn't as high as it should be in the product.
It's because of this that I've taken into consideration that if a replacement is my only option, I would move it to a backup role and get new lighting for that tent. Of course that gives me 2 spare lights, but it is what it is.
There are two levels of confidence in growing: 100% or something else. 100% is the only one that works. Any unreliability in any of these systems and a grow simply won't achieve its potential. So invest whatever you have to to have lights and a nutrient system that you can 100% count on. Two good grows and you pay for everything anyway.
Upgrade Top Off Tank
Considering upgrading the top off res from 10gal to 17gal. Kind of a no-brainer on this one. Instead of filling up the top off a couple three times a week, it would lessen the frequency. Could most likely top if off after 2 days and make it through the rest of the week.
Totes are cheap, all things considered, so a $10 fix isn't going to be a burden.
Bigger res=better.
Oscillating Fans
I went from the USB powered ones to the vivosun ones designed to clip on your tent pole. They're ok, even though I could run 5 or 6 of the USB ones for the power of one of these. Even with a fairly low wattage on these (somewhere just under 30w IIRC) when you can save a watt you should if possible.
I would need 3 or 4 of the usb ones to cover the same space (they're a bit limited in how far they turn), but that isn't the real concern I have. So far I have had 6 of these fans fail, all in the same manner, and all didn't last more than a few days from initial poweup. What's failing is the internal power connection, and when the fan oscillates it gets to the end of the turn and cuts out. Sometimes it's turning fast enough that it has enough momentum to swing back the other way just enough to trip the power back on, but eventually it won't and ends up dead in the water. An easy fix for this would be just a hair longer wire run internally, as well as ensuring the connection is solid. Right now it seems that the internal wire length is just a hair short, and the oscillation eventually stresses it enough that it cuts out when it gets close to the end of the swing.
Fan lifespan is almost directly correlated with the price of the fan. So you will either use and regularly replace cheaper ones or get some beefier ones that will last. And don't forget a box fan on the floor, to gently keep a stream of air going through your canopy from below (not too strong) to keep it from getting too wet (mold), mostly a potential issue in a very thick canopy.
To their credit, they haven't blinked and been happy to replace them. However we're at another one of those confidence things again, and my trust in them does not go very far at this point. When they work they are fine, and the real selling point is the clip. However I think I may go another route when I have the next failure. The 6 running now seem to be doing well, but when I check that the lights came on I also make sure the fans are still turning as expected.
Something I've thought about is using stationary fans, and hooking them up to a wave maker. WTF is that, you ask? It's a timer controlled power strip designed for aquariums. Specifically reef tanks. You plug your powerheads into it, set it up, and it will turn them on in sequence to mimic tidal currents.
Using one for fans in a grow would turn on a fan, then wind it down and turn on another one, etc. So out of say, 3 or 4 fans you can create a round-robin of airflow in different directions.
You really like making this complicated, don't you?
What I most likely will do is what I already have in my backup gear. It's one of those little holmes blizzard fans, that is hooked to an iPhone/iPad holder that is designed to attach to a music/microphone stand. I can't take credit for the idea, I found it here in a thread somewhere, but I can say that it works really well.
Which direction I head in I am unsure. But I would like to have a contingency plan in place so that when I have another one fail, and then use the backup, I know what I want to go with.
Nutrients
This is more of an outside thought than anything. I'm quite happy with the results I've been getting with Mega Crop, and I'm also extremely pleased with the price. ($20/grow for a 50gal rig with weekly changes is insane. )
However, some may have heard me mention my one little gripe with it: root staining. Outside of straight water hydro, it isn't really an issue. But when you need to check your roots for issues, and they're a light tan/brown from the water, it can make spotting an issue as early as possible almost unlikely.
While I most likely won't make a change, if I were I think I'd look at Jack's. I need to do some more digging on their micro nutes though, as it may not have all I've come accustomed to with MC. Out of all the things I'm thinking over, this one is probably the least likely. Although it still makes for an attractive price at around $30/grow, there is also the old adage about if it's not broke, don't fix it.
What brand of nutes you use doesn't matter; only that your roots are getting all the nutes they need at the right PH so they can absorb them all. I'm not familiar with Mega Crop but the chemistry of growing is universal they all have the things needed. With nutes I think the key is LESS. I only use at most 50% of the recommended strength of ALL my nutes because there's plenty still there and it isn't all used by the plants every fill so watch PPM. Also if you're getting any sludge you're using too much nutes. Your leaf tips will tell you everything, rely on them rather than using a predetermined amount per gallon. I don't have to flush my plants either, because they don't build up a chem taste. Just my take on it but it has worked well for me.
So there's the list so far. What comes of it, I'm not sure. However some combination of things will end up happening. I suppose if I go with drain lines, I don't really need to raise the buckets or any of that mess. I also wouldn't necessarily need a pump upgrade, either. So who knows where things end up, but definitely something will be happening to improve upon what's going on now.
By far the most effective way to add oxygen to your solution is airstones and a hefty air pump in the reservoir. I use a pump with a double output in each of mine. The spraying and waterfall effect isn't as effective as zillions of small bubbles, the smaller and more numerous the better so select your airstones for that.
If you don't have a level surface for all your connective tubing it's surprising how much a small elevation change can affect water flow. Reduces the efficiency of your pump too. Sounds like raising your buckets/res and flattening everything out will help you, that is, if you have the room to give on the top side.
Cutting holes for lines that run below the water level is a tricky business that can often result in pesky leaks. The production drills, quality of cuts and grommets that manufacturers use add up to a reliable seal but I have found it's hard to do it on my own. I recommend a lot of the best silicone caulk unless you want to use a lot of paper towels, forever.
Also keep in mind if you up the size of your pump, or decrease the diameter of your lines, the pressure will increase and that raises the chance of leaks, and increases the workload on the pump. The best systems move plenty of fluid but don't create much system pressure so try to design with that in mind. Pressure free is the way to be.
A graduated transition between light to dark periods (simulating nature) has not been shown to enhance yields. Better to chop lights on a precise schedule, full-off or full-on. Though it is cool.
There are two levels of confidence in growing: 100% or something else. 100% is the only one that works. Any unreliability in any of these systems and a grow simply won't achieve its potential. So invest whatever you have to to have lights and a nutrient system that you can 100% count on. Two good grows and you pay for everything anyway.
Bigger res=better.
Fan lifespan is almost directly correlated with the price of the fan. So you will either use and regularly replace cheaper ones or get some beefier ones that will last. And don't forget a box fan on the floor, to gently keep a stream of air going through your canopy from below (not too strong) to keep it from getting too wet (mold), mostly a potential issue in a very thick canopy.
You really like making this complicated, don't you?
What brand of nutes you use doesn't matter; only that your roots are getting all the nutes they need at the right PH so they can absorb them all. I'm not familiar with Mega Crop but the chemistry of growing is universal they all have the things needed. With nutes I think the key is LESS. I only use at most 50% of the recommended strength of ALL my nutes because there's plenty still there and it isn't all used by the plants every fill so watch PPM. Also if you're getting any sludge you're using too much nutes. Your leaf tips will tell you everything, rely on them rather than using a predetermined amount per gallon. I don't have to flush my plants either, because they don't build up a chem taste. Just my take on it but it has worked well for me.
Don't know if anything I suggested helps but I hope so. Simpler is better, do everything with that in mind and you'll get it perfect. Keep it up!
Peace, Hyena
From In House Genetics:
- Slurricane
- Deluxe Sugar Cane
- Platinum Jelly
From Barney's Farm:
- Morning Glory
- Mimosa EVO