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def needs to be sterile, like the others said use bleach or pool shock, or even more simple just use some city tap water. the chlorine in it will keep everything nice and sterile

1 gram per gallon gives u about 120 ppm, order online directly from jr peters

i measure using ppm but usually around 120 ppm or so

without epsom i always run into magnesium deficiencies kelly1376

these plants were doing great until i mainlined them and now they r droopy and hardly growing. they are og kush in coco, i was using cns17 but am now using jacks 321 at half strength. any opinions on what the issue is? nute solution is phed to 5.8

does anyone use the ph adjuster from jr peters? dont know if using the gh ph up and down would work the same

u can wire in a resistor with the pot instead. will do the same thing but u will have full range for dimming

if u can connect two wires u can build a cob panel, there are plenty of tutorials online growmau and greengenes have some good ones

you could diy a 200w cob panel for about 150 and would be a way better light than that...wouldnt be the most effecient but would probably do a beter job by itself than ur mars and the lushpro combined. 4 cxa2530s, hlg 185h c1400 and 4 artic alpine cpu coolers

using a 300w (3w chipset) and a 400w (5w chipset)...actual wattage draw is about 280w. not mars but apollo horticulture ( same exact lights as mars), i am able to get a g/w

a hlg 185h c700b can run 8 36v cobs and will be dimmable, cheaper than buying individual drivers

a 36v cob ran at 700 mA would be running at 25.2 watts (36v x.7 amps=25.2 watts) and 37.8w at 1050mA

one week after sprouting in coco was only watered twice

what cob chips are you running and at what mA, whats total draw on light?

im just using it for veg right now, thought it would give me a lil spectrum mix, but now hearing peoples replies i dont think im gonna need it for flower

cxb3590s are dimmable 2530 is not

i have no idea how to figure this stuff out, thats y i asked for help

yea def have a prob with the blurple burning leafs and buds if too close

no par or lux meter, i have another tent with 700w of apollo panels( really only pulls maybe 300 from the wall) usually get about a gram per watt, i can tell these cobs are way brighter

4.98ft2, so 1245 ppfd which should be more than ample light