> >you're sure of the conversion of your TDS pen, the accuracy of your measurement isn't THAT critical, but you need to be pretty close.
-- I'm not sure what the conversion of my TDS pen is..
>> solid 75 - 77 degrees at the top of the plant.. Humidity is at 45 - 50% right now
I think those numbers are right on time for the duration. Temps will go up with the 400 and hopefully you'll be able to tweak to maintain appropriate levels.
-- I hope to get a air cooled reflector to keep the levels in check..
>> what happen with my last grow
Probably a deficiency, sure, but adding the deficient nute would likely not have done anything! Treating the symptoms and not the cause will get you no where, fast! My guess is several things were happening: Not enough oxygen in your water, probably under strength mix of nute soup, warm water (depletes O2 further, encourages bugs and dying roots), dying roots (will lead to dying leaves and drop your pH as you describe..
-- sorry I forgot to mention I took the ph with the air stone on full power.. I read this caused my readings to fluctuate.. Now as far as the oxygen in my soup was concerned I forgot to say I put 2 air stones in there.. I had 2 reseviors but ended up with one so I took the air stone and added them to 1 bucket.. So that rules out air from air stones.. Lol so your saying the the strength of nutes I mixed was too strong or did water evaporation make it too strong.. Because I didn't know about topping off my Rez.. The water level was lower..
>> Might have been light burn..
If the light was 18" away, I doubt it...bleaching would be more toward the top, sounds like your symptoms started at the bottom.
--Mine did start at the bottom those leaves were crisp.. Pale green and hard..
>>Correct, full strength, or go home! Well, unless you're still under CFLs. I would let her get a couple sets of three blade leaves and at that point start feeding at about 4 or 5ml/liter (target EC of about 1.4, 1000ppm @ .7 conversion). It's not a lighter recipe for a smaller plant, it's a lighter recipe for weaker lights. When you switch to the 400 to finish veg, you can just add nutes to bring it up to ~ EC 2.0 (not over 1400ppm @ .7).
--Right now yes I'm still under the cfl's which is at 208 watts right now. My question is are you saying I can start now?? or wait til three blade leaves show then start at 4 to 5ml per gal then bump up to 400 watts and about 1000 ppm on her birthday lol.. I can wait til 3 blades show they might show tomorrow maybe the next day.. By the way she's under 24/0 lighting hope that encourages more growth..
Edited by xChiefxBigBudx, 12 May 2012 - 01:06 AM.