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I've combed over this thread a few times, but still have a few questions....i'm using Soil A/B, is there a consensus on how often you should water with nutes? every other time? half strength each time? I also have a significant magnesium deficiency going on, i'm about to use epsom salts to...

when using these nutes you HAVE TO ADJUST THE PH. when you mix the nutes your ph will drop to about 4.0 and you have to use some sort of Ph upper to fix it....

try reading this...should help http://www.learn2grow.com/gardeningguides/fertilizer/basics/understandingfertilizernumbers.aspx

more details...lights? distance? humidity? CO2....need more info

I'd start over....those pics look like goners to me...try putting them in soil and see if they snap out of it?

can anyone recommend a good soil test kit for Nitrogen, P, K, Ph, others?

whats the deal with RO water? i dont' have that in my house, all i have access to right now is tap water...i'm adjusting the PH of my tap down to 6.0 to 6.5 before water the plants...is that good enough? on another note, my RH has been gettin too high, over 90% every light on cycle...could...

I think i'm using a complete NPK. Brand is VAN DE SWAAN, HG AARDE A&B. Stats are as follows A - (N) 2.0% total nitrogen - (K20) 1.0% Soluble Potash B - (N) 1.0% total nitrogen again - (P2O5) 1.1% available phosphate - (Mg) 0.5% water soluble mg So I for sure am...

quick question...i usually keep my room at 1200 ppm, at least till my tank runs out...then i sometimes go a day or two back at normal atomospheric levels....can that hurt a plant?

better than my second grow.....nice

hey silky..i'm yelling too, i'm all new to this and dint' realize that miracle grow and other slow release ferts were such a pain in the A$$....keep yelling, i'm learning the hardway, gotta learn somehow...bout to start round 3, not sure what i'm gonna use but it sure as hell won't be miracle...

what pictures are you referring to? none were posted? thanks man

pics, pics, pics.....

did they ever recover?

that looks like some stinky sh!t....nice

can you vent to the attic?

just make sure you have enough lumens per sqft. a 600w hps puts out roughly 80,000 lumens, if your target is 2500 lumens per sqft, thats enough for 32 sqft

ballasts are very specific on what they can and can't drive...too the best of my knowlede you can't get an HID ballast that runs more than one lamp....fluorescent ballasts are more flexible, the types and numbers of lamps they can drive are listed on the ballast

what part of the country are you in? Cold weather? humid?

the wierdest part to me and why i'm having a hard time diagnosing is that the problem isnt' on the edge of the leaves, it slowly takes over teh whole leaf