darkrider_64 said:Hello HempKat, I have run into something strange during my first grow. I am 6 weeks into growing 2 plants of Oasis strain in Sta-green soil w/ perlite, Liquid Karma & Miracle grow, in 12 inch pots, and 400w MH lights. The grow area is 3x2x8. It seemed like the plants weren't growing all that fast, the leaves were curling down & the bottom leaves where turning a pale yellow with the MH lights. I started using purchased distilled water b/c I thought it could be a pH issue (measured b/t 6.1-6.3). Before I left, I put them on 2 40w 4 ft fluoro lights b/c I was a little worried about leaving them unsupervised w/ the MH Light. When I returned 5 days later, them seemed to have doubled is size and returned to nice dark green color. When I returned, I placed them back on the MH lights and the growth seemed to halt and the the very tips of 2 leaves where yellow.
Do you recommend that I keep using the fluoro's or go back to the MH light. I thought that the MH lights were supposed to have better growth. What do you think?
Also, can Tiger Bloom be used by itself or does it need to be used with Big Bloom?
Thanks so much for the help. Here is the "before and after" pic
That's tough to call, I suspect you were getting different signals at different times and you're making a connection out of it that shouldn't be. The pale yellow before the fluoros was likely a mild deficiency setting in. I'm guessing you feed them prior to being gone for 5 days and if so that probably is why they looked healthier upon your return. The main reason I say this is when one has a deficiency usually it's the lower leaves that will show it first. The yellow at the tips you are seeing now, sounds more like a slight nutrient burn which if you gave them a little extra because you were going to be gone for a few days, that may be why.
The lack of growth is tricky because nothing you've said really explains it and it could be the result of a number of things. If you keep your MH too far away from the plant (more then a foot is too far) then they may not be getting enough light, however this should also make them stretch too much trying to reach the light. If you water too frequently that can stunt growth as the plants need the soil to dry out some to encourage healthy root developement. If that were the case, then the time you were away might have allowed them to dry out a bit more. You may not be feeding them enough. I say this because at 6 weeks it's a bit odd to have a deficiency if they're on a regular feeding schedule. Also six weeks is a fair bit of time in a 12" pot they may be getting a bit root bound although the growth above the soil doesn't seem enough for it to be rootbound.
The plants in the lower pictures look pretty healthy and happy so if that's how they look now, you likely had a deficency with the paling leaves that has now corrected itself. I'd leave them under the MH with the light about a foot above the plants. Remember, 99% of the time if a leaf changes in appearence because of something going on in the plant, it won't change back, always look to newer growth for indications that the problem has been resolved.
As for the Fox Farm nutrients I'm not too familiar with them, both are flowering ferts to my understanding so you wouldn't really want to be using them until you go 12/12. I googled Tiger Bloom and what I read sounds like it could be used by itself but from what I've seen on canna sites, most use it with the Big Bloom. I seem to recall hearing from someone that the Tiger Bloom is the main fert and Big Bloom is a enhancer or supplement. I'm not sure though so I'd encourage you to check with someone more familiar with Fox Farm products. You shouldn't have a problem finding someone, tons of people use Fox Farm products.