Newb needs help

Hi everyone,
This is my first grow and I'm starting to have issues with leaves so I thought I'd seek out some experienced hydro growers for advice before things go crazy. I'm growing out 2x GG#4 and 3x Cheese from Canuk seeds. I think I might have went a little hot on the first feeding but have dialed it back since then. The main problem I see is splotchy lighter colored patches and I can't find anything in Jorge's Bible that looks like it. I'm also hoping someone can tell me if everything else looks good or if I'm heading for more problems.

My setup is:
4'x4'x6.5' Grow Tent
Phantom Dual 315 CMH w/ Phillips 4200k Lamps @ 24" above canopy
4" Inline 190cfm exhaust fan with 200cfm Carbon Filter
2x 4" Booster fan for intake(they say 100cfm but I still have negative pressure)
5x 5gal. buckets +a 5gal. for reservoir with 75GPH submersible pump
6" net pots with 3x3 Rockwool cubes covered by Hydroton

My nutrients:
Blue Planet Elite Series + supplements
Gold Shield, Micro, Grow, Bloom, Vita Blue, Easy Weed, CalMag
I used Root Magic powder and CalMag powder starting out but the powder didn't seem to dissolve very well so I switched to the liquid CalMag and stopped using the Root Magic.

Temps are right around 72-75 F lights on and 65 F lights off. Humidity is at 36% which I know is low but I haven't been able to correct it yet. They're on 18/6 light cycle and I'm in the third week of Veg. feeding. I'm mixing the nutes at 3/4 strength and that seems to put the ppm where the feeding chart suggests. I have RO water that comes out at 0 EC, 0 PPM, and 5.8 Ph. I maintain the Res. right around 5.8 Ph.

I'm mainlining the plants so I've topped them twice and plan on building a screen for scrog this weekend. I'm putting in some pics of the leaves(now removed because they were all just laying on the lids), the plants, and the tent. Any advice will be really appreciated. There's so much information out there that I've found myself just trying to piece together what I can to grow some dankness. Thanks

what do ur roots look like

Mostly white with a little brownish tint that started after the first feeding so I figured it was just coloring from the nutes.

2WorldsFrog said:

Mostly white with a little brownish tint that started after the first feeding so I figured it was just coloring from the nutes.

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take a picture to be sure, i think it could be because of your res temps. if i stand corrected, water gets to the same temperature as the room fairly quick, with this being said 72-75 should be causing rootrot, unless you're using some type of god tier root innoculant.
i've had to try and keep my temps under 69 to avoid rot, which hasn't worked too well in my favor.

My res. temps stay between 62-68. They were getting into the low 70's until I covered the lids with HVAC tape. Looking now they seem to be getting a little more brown to them. Rot? Fuck, how do I fix it?

The plants look fine to me. They look like they would like some more R.H. if anything.
I don't bother with a chart for required ppms. I check daily and if the ppm go up I dilute with water and if they go down I increase with nutrients. Until I find the sweet spot. Once they are dialed in, they grow like a weed. I get leaf spots too though and I just grow it out. I've messed up ph, I've way over fed and just recently couldn't keep up with their hunger which resulted in some iron deficiency or something. The leaves are just a record of my success or my errors in a temporary story that ends with ultimate death and buds.

2WorldsFrog said:

My res. temps stay between 62-68. They were getting into the low 70's until I covered the lids with HVAC tape. Looking now they seem to be getting a little more brown to them. Rot? Fuck, how do I fix it?

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are your nutes or additives brown in color?

they don't look slimy to me. can you pull off a chunk pretty easily? do they smell funky?

The Vita Blue stuff is thick, brown, and has a pretty strong smell to it. I was just looking at them pretty closely and they're not slimy. Everything smells fine and it looks like nute coloring to me, my first go at hydro though it's really only a guess. They've taken in over 100ppm of nutes and probably a gallon of water between them in the last 24 hours. Also going to pick up a cool air mister for the tent for the RH.
Thanks for all of the input guys, I really appreciate it

I usually get some spots here and there, depending on the strain I'm running. what does the new growth look like?

I think a lot of people have tried the vit B,most never finish the bottle.
I prefer to see white roots so I can tell if something is a miss.
A larger rez will help keep water temp down.

harley1988 said:

I usually get some spots here and there, depending on the strain I'm running. what does the new growth look like?

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New growth looks good, it's maybe a little lighter green than at some points but I think it's ok. Everything is growing like crazy since the res change the other day so I'm thinking I might have f'd up the mix the week before.

myke said:

I think a lot of people have tried the vit B,most never finish the bottle.
I prefer to see white roots so I can tell if something is a miss.
A larger rez will help keep water temp down.

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Definitely doing a bigger res next time around. I'm not sure how I feel about the Vita Blue either, can you recommend something that does the same thing without the coloring?

A good all round NPK and calmag is all you need.

You'd know if you have root rot. It stinks. No offence to previous posters but some people do have a tenancy to get new growers panicking all to readily.

Once the roots are abundant pull a bit off and eat it, it tastes like cucumber....very odd .

Anyway, if you want to keep your res temps down just add frozen water bottles. Don't use anything but water, no freezer packs or anything like that as if they split the chemicals will kill the plants.

Good luck.