churchhaze
Well-Known Member
Iron Sulfate.
Got some today, i planned on using epsom initially but the stores were closed and i was high and impatient last night...it felt like the more I looked at it the worse it gotI didn't understand that. Water heaters have whatlled a "sacrificial anode" which will erode before the tank's steel liner. I don't believe it erodes at a rate that it would provide significantly more mg than your tap water would have in it anyway. (The rod could be aluminum, not magnesium too.).
If it were me, I'd spend $2 on a pound of epsom salt at the drug store. Use 1/4 to 1tsp/gal nutrient solution depending on severity of mg def. It will last a decade at that rate of application.
Rust water?Iron Sulfate.
What is your runoff ph and ppm?I have some epsom salts, the calcium nitrate is on it's way ($10 for 4 pounds), I don't know what chelated iron is or what ratios to use at all but my plants are looking worse by the day.
It could be a coincidence, I'm not really liking my 5000k 70cri veg lamp either. The growth is just not as good as when it was under vero 3000k 80cri.
My 5k 70cri veg light does okay on its own. I've been leaving the small red boost on lately. That combo works pretty good. Ideally I wouldn't want to mess with small stars in veg though. I'd think at this point 4000k 80cri would veg best... Or, maybe just a 80cri 5000k. 70cri doesn't seem to have a very high light quality for plantsIt could be a coincidence, I'm not really liking my 5000k 70cri veg lamp either. The growth is just not as good as when it was under vero 3000k 80cri.
Im surprised. I am running two veg lights. 5 x vero 10 5000k at 350ma each fixture. each one covers a 2x4 x 3' high area. I think Im less than six inches off the plants in spots and nothing but green growth. Explosive even. I find the stuff under 3000k for veg to be a bit lanky for my liking.
This is just my experience. They have been running 3 weeks now. I noticed a pretty significant increased nutrient requirement across the board compared to vegging with my cfl that were at 6000k. I used to be able to feed just water several times between nutrient feedings but now its every time.Interesting...I need to turn my reds off in veg again and look a little closer into it
Same here, much less nutrient problems now. Keeping them in small pots bonsai style is easier than ever, just dial the light to just the right intensity.This is just my experience. They have been running 3 weeks now. I noticed a pretty significant increased nutrient requirement across the board compared to vegging with my cfl that were at 6000k. I used to be able to feed just water several times between nutrient feedings but now its every time.
Seems we're running the same lights...You're running 5 @ 9 wattts for each 2x4 area? That's like 5 watts per square foot. I'm using 8 in a 1.5 x 1.5 area..geez, maybe that's part of the issue. I tend to over do it.Im surprised. I am running two veg lights. 5 x vero 10 5000k at 350ma each fixture. each one covers a 2x4 x 3' high area. I think Im less than six inches off the plants in spots and nothing but green growth. Explosive even. I find the stuff under 3000k for veg to be a bit lanky for my liking.
@tightpockt
I do use cal-mag. did not prior to using leds. I find they need a bit more nutrients in veg than they used to under cfl though. So maybe they are starved? Hope you get it fixed.
I think what's meant by "spectrum" is that more umoles are reaching the canopy. Driving the plant's photosynthesis harder and creating a deficiency that didn't exist when there was enough mg to satisfy the photosynthesis occurring under lower umoles.People say "spectrum" but that is a poor answer and very vague. Trying to figure it out I just have not found any solid documentation.
Which cree light bulbs at home depot provide good plant growth?A photo would help. Mg def seems to be a common complaint from people converting to LED. Could be too close and bleaching the leaves. Is it only the top leaves?
If I were going to replace CFL, I'd use the Cree LED lightbulbs from Home Depot. Seems like a direct replacement with 30% more efficiency. With COBs I'd be concerned whether they're driven soft enough that they can be CFL distance (if you can't manage more distance).