New growth is very pale! HELP

[basementbotany]

i just started flowering two days ago and all of my new growth is a pale green, almost yellow looking. can anyone diagnose this?
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basementbotany Reviewed by basementbotany on 02-06-2008. New growth is very pale! HELP i just started flowering two days ago and all of my new growth is a pale green, almost yellow looking. can anyone diagnose this? Rating: 5

[stinkyattic]

They look good actually. That's typical, for new growth to be noticeably paler when you first put it in flower. This is a time when you will need to keep a close watch on the plants for any other signs of distress, and to make certain that the pot is big enough for the plant, since it puts on a lot of mass during the first couple weeks of flower.

[basementbotany]

i know the pot is big enough for the plants, they are in an ebb & flow, 6" net pots. i don't think those pics show how yellow they actually are.

[basementbotany]

now, what the hell can i do about my humididty? i have a dehumidifier running 24/7 and i still can't get it below 60%, is that ok?

[stinkyattic]

now, what the hell can i do about my humididty? i have a dehumidifier running 24/7 and i still can't get it below 60%, is that ok?

Yeah I saw that and it's not okay; you could end up pretty fucked mold-wise.
You're in a basement. Look to your FLOOR as a source of humidity. You're gonna want to seal any raw concrete with a nice heavy coat of waterproofing paint. I used plain ol' KILZ oil-based primer, white. It may make you pass out from inhaling kerosene stanky paint fumes but it did a good job on my cellar floor.
Double-check that your hygrometer is working accurately. Thos echeap walmart ones aren't all that reliable; I've got 3 identical ones and they NEVER all agree lol!
Exhausting air more aggressively will also draw your humidity down. And a small space heater will lower the RELATIVE humidity.

Okay, yellow plants. Hm. Has anything else changed other than the light cycle? pH still stable?

[basementbotany]

pH stays between 5.5-6.0 constantly. only have to fiddle with it about twice a week. as far as i can tell, the only thing i'm battling right now is the yellowing and humidity. the problem with my basement is that it has a curtain drain, and we have had tons of rain the past couple weeks and the rain water flows around the curtain drain in the basement. my guess is that's the main problem and there's nothing at all i can do about that.

[basementbotany]

another thing, when i have the space heater on while running the dehumidifier, the temps climb up into the 80's. so my choices are high temps, or high humidity. which one is more of a downfall? i know they both are, but i have to do one or the other.

[stinkyattic]

Below 85 is not going to give you huge problems. You could consider running a CO2 system which would allow you to boost your temps up even further.
I used to live in a house with a curtain/French drain too and it had been installed because the cellar DID tend to run on the wet side. Surface area determines rate of evaporation if all other things are equal... the large open wet floor evaps more than the water in the drains. Hm. I have to think about this. You know, a nice tiled cellar floor adds value to your home...

[basementbotany]

Bro,
Can you simply place a 6 mil poly vapor barrier under/around your grow? Even if you paint, the block walls will still emit humidity, thus around. Then you may only have to deal with the heat...?

[stinkyattic]

You're going to have to install it properly, as if for a finished basement.
Then run the dehumidifier IN the space.
Intake air will still be moist from the basement.
A 'sealed room' with CO2 boost may in fact be your best bet here if you can't get your %RH down below 45.
And btw... I'm a 'sis'