Hydro help

Have these clones in general nutes for about one month , little less. tds is 1190 water started out w. 220 ppm. water sat for two days open to declorinate. ph is 5.7 400watt mh in 3x3 cab 6 ' high. light about two plus feet above. 8 gal. res. temps in res high is 79. in cab high is 91. the cycle is 18 on 6 off right now. lost a lot of leaves. new leaves turning under. old leaves have lesions. light green on leaves. also went through a bout w/ mites think they are under control now. Thanks in advance for your time and expertise.

make sure you have aerator, you dont want your res. water sitting so long. I'm not sure what tds means. I generally start a 1/4 of what the feeding chart says & move up to no more than 1400 ppm & then come back down to1/4 of what chart says. Also have temp no higher than 82 degrees & humidty around 55%.

Yes I have an aerator with three stones blasting away. By tds i mean ppm. right now 995ppm. Water alone was 220ppm. working on the cabinet temperature the high is 91 during the day. have to get another inline for the light, using a port. fan now on the cooltube 400.

Temps are too high in cab. get a intake of fresh air and/or a bigger fan to bring temps to 75-80f. Rez temp seems high too.

Start off slow with your nutriants and increase slowly.

you might want to look into some tempered glass to seperate you light from the grow area. this kept my temps down from 88f to 78f.

just some thoughts.

good luck.

MJ

you guys are fast..... seems like you have the cooltub. get the intake for it and the temps will drop!!!

Well time to change the solution anyways. One week. will go down on the nutes . also Do I need to add cal/mag with my nutes? and what form do you use or brand? Thanks for the help. G

Nah I dont have cooltube but I do connect my light/hood to my exhaust & brings down the temp plus a fan does wonders also.

1) Nutes way to strong at this point
2) I have never let my water sit out, I run it right from the tap but thats just me. When water sits out like that it not only declorinates but also distills, no O2. I'm not giving water that has 0 O2 to my girls but again thats me.
3) PH is borderline low. At 5.6/5.5 things start not being taken in by plants. 5.8 - 6.0
4) Light to high. try more like 12 inches, drop light then put hand just over top of plant and leave it there a sec or 2 ........... does your hand hurt? If so raise the light a lil if not leave it be
5) Rez temp is borderline high. 80 and above you start playing with chances of root rot and worse.
6) Cab temp to high!! No more than 85 unless you are Rusty in the desert :D
7) light cycle is good till flower
8) You can pick up a pest strip and stick it in there to help with critters
9) Calmag is a good addition. can use 5ml per gal as a preventative. Most people use the actual "CalMag" which I think is made by Advance but I am using GH's version

I use cutting edge solutions brand & its like 6 bottles for vegging plus I add bud candy & carbo. I like to one brand so you dont have read the back of each bottle & make sure you didnt miss anything.

Quote:

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Originally Posted by tinytoon

26) Cab temp to high!! No more than 85 unless you are Rusty in the desert :D

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Cute, lol.
I'd love a CannaLab, but can only afford my ghetto shed. I have two choices here in the desert. Play the cards I've been dealt, or fold the hand. Either way..it's getting friggin hot here. Mid 90's as I type.