Yes def need to supplement Cal-Mag when running RO water. Until you get some add 1/2 - 1 tsp of epsom salt per gallon for mag def. Dont add too much or you will lock out Potassium
Nute Burn or Deficiency...
- Thread starter gmskunk
- Start date
Yes def need to supplement Cal-Mag when running RO water. Until you get some add 1/2 - 1 tsp of epsom salt per gallon for mag def. Dont add too much or you will lock out Potassium
I generally just mist with straight RO 7.0 water. I dont bother adjusting it for misting. 5.6 on the leaves may be a tad acidic for the leaves but I am not positive.
- Thread starter
- #23
Yes def need to supplement Cal-Mag when running RO water. Until you get some add 1/2 - 1 tsp of epsom salt per gallon for mag def. Dont add too much or you will lock out Potassium
what about dolomite? will that work? I stopped by my local nursery on the way home (looking for cal/mag) but Dolomite was all they had. I was iffy about using it, but @ 6$, I figured I'd just go ahead and buy it and then research it when I got home before using it. But now I'm not seeing much info on using it for hydro-grow.
if this is not a good idea, I'll run out and grab some epsom salt to carry me over until I can get an order shipped of the real deal cal/mag.
ok, yeah I switched up to straight R/O water as I was worried that the spotting on the leaves may have been due to acidity.
After a bit of research on foilage sprayinng, I am considering the addition of DutchMaster Liquid Light + DM penetrator (1-2x/wk). I read some good stuff on those two products.
- Thread starter
- #24
ok, found some reliable info (book: Marijuana Horticulture By Jorge Cervantes) giving me the go ahead on adding dolomite to the solution.
4/5/09 -- PM check
RH=45 @ 75 F
WW1 (adjusted to pH 5.75 @ 150 ppm)
- dumped res. and created a new 2.5gallon, 150ppm, 5.75pH solution.
- added 1 tsp dolomite (mixed thoroughly and strained excess)
- began LST (going to try the spiral technique I saw in your grow, McBudz
btw)
NL1 (adjusted to pH 5.8 @ 450 ppm)
- added another gallon of water to the res. along with 1 tsp dolomite and and a slight amount of nutes bringing the ppms from 375 to 450.
Looks like I'll be ordering the cal-mag online as I'm unable to find a place carrying it locally. should be here next week along with my new camera. also, didn't realize how expensive DM liquid light was. might save that for the next grow when I'm more comfortable with the basics.
I'm planning on moving forward with the flowering stage as soon as I can get the WW1 back to full strength...hopefully in 2 weeks.
that's all for tonight...dinner time
4/5/09 -- PM check
RH=45 @ 75 F
WW1 (adjusted to pH 5.75 @ 150 ppm)
- dumped res. and created a new 2.5gallon, 150ppm, 5.75pH solution.
- added 1 tsp dolomite (mixed thoroughly and strained excess)
- began LST (going to try the spiral technique I saw in your grow, McBudz
btw)NL1 (adjusted to pH 5.8 @ 450 ppm)
- added another gallon of water to the res. along with 1 tsp dolomite and and a slight amount of nutes bringing the ppms from 375 to 450.
Looks like I'll be ordering the cal-mag online as I'm unable to find a place carrying it locally. should be here next week along with my new camera. also, didn't realize how expensive DM liquid light was. might save that for the next grow when I'm more comfortable with the basics.
I'm planning on moving forward with the flowering stage as soon as I can get the WW1 back to full strength...hopefully in 2 weeks.
that's all for tonight...dinner time
- Thread starter
- #25
4/6/09 -- AM check
RH=40 @ 78 F
WW1 (adjusted to pH 5.65 @ 150 ppm)
- leaves still look bad...probably need more time to recover.
- on a good note, the pH was up and the ppm was down *hopefully* indicating that the plant is slurping up the nutes. It was previously being flushed for ~4 days so surely it is starving. Nutes were just recently re-introduced last night.
NL1 (adjusted to pH 5.8 @ 450 ppm)
- plant looks good - becoming a very bushy plant.
- noticed a bit of curling around the edges of the leaves. res water was warm again, but that was to be somewhat expected since I was out of town the past 2 days (unavoidable). also raised the lights slightly...I didn't think it was too warn as the CFLs were about 2" from the tops, but now there's more like 4-6 inches.
working on a larger reservoir made out of a cooler to help with pH fluctuation and res. temps. Will make a decision on whether to implement it during this grow. Still at the very beginning stages of design.
Questions:
1. I've seen a few journals where the water is turned off during lights out. Does that sound like a good idea considering my setup?
2. How often should I be spraying the foliage (plain R/O water)? I read somewhere were someone was recommending only just before lights out.
RH=40 @ 78 F
WW1 (adjusted to pH 5.65 @ 150 ppm)
- leaves still look bad...probably need more time to recover.
- on a good note, the pH was up and the ppm was down *hopefully* indicating that the plant is slurping up the nutes. It was previously being flushed for ~4 days so surely it is starving. Nutes were just recently re-introduced last night.
NL1 (adjusted to pH 5.8 @ 450 ppm)
- plant looks good - becoming a very bushy plant.
- noticed a bit of curling around the edges of the leaves. res water was warm again, but that was to be somewhat expected since I was out of town the past 2 days (unavoidable). also raised the lights slightly...I didn't think it was too warn as the CFLs were about 2" from the tops, but now there's more like 4-6 inches.
working on a larger reservoir made out of a cooler to help with pH fluctuation and res. temps. Will make a decision on whether to implement it during this grow. Still at the very beginning stages of design.
Questions:
1. I've seen a few journals where the water is turned off during lights out. Does that sound like a good idea considering my setup?
2. How often should I be spraying the foliage (plain R/O water)? I read somewhere were someone was recommending only just before lights out.
- Thread starter
- #26
Pics - 04062009 (just over 1 month since seeds popped)
Pic1 - WW1
Its hard to tell, but 2/3rds of the leaves have brown spots (most likely from deficiencies as a result of a 4 day flush).
Pic2 - WW1 (top)
Pic3 - NL1
Pic4 - NL1 (top)
Pic5 - Active Intake
Might need to consider adding a humidifier. I just switched the active intake from the a hole in the floor (closet of bedroom below) to an AC vent. This is making it hard to keep RH over 40. Will continue to monitor for the next few days and purchase if when necessary.
Pic1 - WW1
Its hard to tell, but 2/3rds of the leaves have brown spots (most likely from deficiencies as a result of a 4 day flush).
Pic2 - WW1 (top)
Pic3 - NL1
Pic4 - NL1 (top)
Pic5 - Active Intake
Might need to consider adding a humidifier. I just switched the active intake from the a hole in the floor (closet of bedroom below) to an AC vent. This is making it hard to keep RH over 40. Will continue to monitor for the next few days and purchase if when necessary.
- Thread starter
- #27
Pics - 04062009
Pic2 - WW1 (top)
Pic4 - NL1 (top)
good comparison...here is a top view picture from 03/27/2009
hope the growth continues...
- Thread starter
- #28
- Thread starter
- #29
4/6/09 -- PM check
RH=40 @ 74 F
WW1 (adjusted to pH 5.6 @ 150 ppm)
- removed some of the leaves that looked bad so that the smaller greener leaves could get more light.
NL1 (adjusted to pH 5.7 @ 450 ppm)
- thick...going to need some stretching if I'm ever going to have a chance at LST. my height is limited so I'll most likely be topping her if LST becomes too problematic.
RH=40 @ 74 F
WW1 (adjusted to pH 5.6 @ 150 ppm)
- removed some of the leaves that looked bad so that the smaller greener leaves could get more light.
NL1 (adjusted to pH 5.7 @ 450 ppm)
- thick...going to need some stretching if I'm ever going to have a chance at LST. my height is limited so I'll most likely be topping her if LST becomes too problematic.
