- Thread starter
- #481
Maybe that's the problem ... I just rinse the end off & put the cap back on after I use it. Didn't know it should be kept in solution. 1st time I've heard that. Thanks.
Photos, Soil, Mars Hydro Grow
- Thread starter Buds Buddy
- Start date
Here's a little Q and A from one company.
Summary
Storage solution for a pH probe
Answer
Storage of a pH electrode can affect the life of the electrode and how quickly it responds or stabilizes in different types of samples. Since the internal and external components are separated by a reference junction, a phenomenon called osmosis and diffusion can occur if different molarity solutions are in contact with each other for too long, causing a drift in the internal reference. To prevent this from occurring, store the electrode in the the correct storage solution. The electrode can be stored for up to 2 hours in sample (if sample pH is not extreme) or in a neutral solution such as tap water between uses to prevent drying of the reference junction, but remember the greater the difference in molarity between the sample and internal solution of the electrode, the more problems that can occur. Do not leave the electrode in deionized or distilled water for more than 15 - 30 minutes. The electrolyte or internal filling solution can become diluted due to osmosis and adversely affect the function of the electrode.
Storage
Always keep your pH electrode moist. We recommend that you store your electrode in a solution of 4 M KCl. If 4 M KCl is not available, use a pH 4 or 7 buffer solution. DO NOT store electrode in distilled or deionized water as this will cause ions to leach out of the glass bulb and render your electrode useless.
After storage, you may notice white KCl crystals forming outside your electrode. This will not interfere with measurements. Simply rinse the electrode and blot dry before use.
Summary
Storage solution for a pH probe
Answer
Storage of a pH electrode can affect the life of the electrode and how quickly it responds or stabilizes in different types of samples. Since the internal and external components are separated by a reference junction, a phenomenon called osmosis and diffusion can occur if different molarity solutions are in contact with each other for too long, causing a drift in the internal reference. To prevent this from occurring, store the electrode in the the correct storage solution. The electrode can be stored for up to 2 hours in sample (if sample pH is not extreme) or in a neutral solution such as tap water between uses to prevent drying of the reference junction, but remember the greater the difference in molarity between the sample and internal solution of the electrode, the more problems that can occur. Do not leave the electrode in deionized or distilled water for more than 15 - 30 minutes. The electrolyte or internal filling solution can become diluted due to osmosis and adversely affect the function of the electrode.
Storage
Always keep your pH electrode moist. We recommend that you store your electrode in a solution of 4 M KCl. If 4 M KCl is not available, use a pH 4 or 7 buffer solution. DO NOT store electrode in distilled or deionized water as this will cause ions to leach out of the glass bulb and render your electrode useless.
After storage, you may notice white KCl crystals forming outside your electrode. This will not interfere with measurements. Simply rinse the electrode and blot dry before use.
- Thread starter
- #483
This is weird . With my oscillating fan on my temps are 81 F most the time & RH is 50 - 55%.
With the fan off I get 77 F & 45 - 52% RH. Is this backwards or what ???
Didn't take GG long to perk up. She's almost normal again in about 1 hour after feeding.
With the fan off I get 77 F & 45 - 52% RH. Is this backwards or what ???
Didn't take GG long to perk up. She's almost normal again in about 1 hour after feeding.
It could be in the set up of the sensors. Maybe the fan is blowing the mist and heat around and when it's off it's not reading the same. Not sure really, just a guess.
- Thread starter
- #485
I have no clue what they are talking about as far as a difference in Molarity. Not even sure what the word means ...LOL.
Me neither, but all you need to know is don't let it dry out and not to let it sit in distilled water. A solution of pH 7 is what works for me. Some caps come with a sponge inside them so you soak the sponge in the solution and that does the trick.
Black Thumbs
Well-Known Member
I let my last pen dry out for a couple weeks and never read right again.Would calibrate fine but any thing away from 7 fluctuated every time I used it.
New one lives in storage solution now and no problems
I drop mine from 6.4 to 6.0
- Thread starter
- #489
Not sure if you're talking about pH of MC during Flower or something to do with pen calibration.
Like I said, I haven't adjusted the pH going in at all. It usually reads 6.6 & my understanding is anything between 6.2 - 6.8 is OK.
When I did Coco I'd run 5.8 all the way to the last 2 weeks & then go to 6.4 the last 2 weeks before harvest.
- Thread starter
- #490
High Everyone ??? Just thought I'd pop in & post some up to date pics. Things are looking better ... I Think ? From what I can tell I'm going to have to mix this MC at 3 different strengths for these plants. Gorilla Glue seems to be content with just 5 grams per gallon. At 5 grams I'm getting some yellowing bottom leaves on the Afghan. At 6 grams I get "N" Tox. So it looks like 5.5 grams may be the sweet spot for her. The Gorilla Girl ... Well I can't seem to make it strong enough for her. At 6 grams per gallon I'm still getting yellowing on her bottom leaves. I may have to go to 6.5 gr. What you think ???
Without Further Ado .... Here's the "Gorilla Glue" pics ....
Without Further Ado .... Here's the "Gorilla Glue" pics ....
- Thread starter
- #491
And my favorite girl of the Bunch is .... Ms. Afghan Kush
- Thread starter
- #492
And here comes that fat bitch from down the street ... she reminds me of some kind of "Gorilla Girl"
They all look super, good job on these girls.
What Penny said!
Havocsm1
Well-Known Member
Yeah I agree they're looking much better nice job!!
Fastass419
Well-Known Member
Plants look happy everything seems to be moving along really nice here as far as 6.5g on your one girl I dont know I've read some say dont go over 6g but then I read some people do with no problem I think it depends alot on the plant but that's just my opinion
- Thread starter
- #497
I have read a couple posts where they went 6.5 grams but most don't. But this plant wont have any Fan leaves soon if I don't do something. She's yellowing at about 3 - 5 leaves per day & nowhere near finished. I guess I'll find out soon as they are getting fed in a few minutes.
Fastass419
Well-Known Member
I know I read were someone said they went up to 10g and had no problem I dont know that sounds like alot but I know that's what I read
Most plants will finish anywhere between 5.5 and 6g. Some plants will require more and I usually find when the plant has no defs and starts yellowing from the bottom then 6.5g is OK.
It's true some have gone to 10g or even higher, but you're adding sooo much N that your plant becomes leafier and tastes greener(hayish) regardless of the cure. Stems also become weaker with excess N so even if the plants are saying they can handle it you're probably not going to enjoy the end product.
- Thread starter
- #500
Need Help Please. I'm not sure if I have an issue or if this is the norm with MC. Tomorrow will be Day 35 of Flower which is only 5 weeks. I figure I have 4 - 5 weeks of Flower left to go so only at the 1/2 way point. But the Leaves on the Gorilla Girl are yellowing like crazy. You barely touch them & they fall off. Some aren't even completely yellow ... just pale green when they fall off. Others shrivel up & get crispy.
Now the Afghan is starting to do the same thing. It hasn't done anything to the GG.
I'm not sure if this has to do with feeding, if it's normal, or what. I wouldn't expect to see this till around week 7 or 8 usually so I'm unsure of what's happening & how to correct it if necessary.
Let me know please. Thanks.
Now the Afghan is starting to do the same thing. It hasn't done anything to the GG.
I'm not sure if this has to do with feeding, if it's normal, or what. I wouldn't expect to see this till around week 7 or 8 usually so I'm unsure of what's happening & how to correct it if necessary.
Let me know please. Thanks.