Please help... hydro growers

larrypizzimp93 said:

Leaves are starting to turn yellowish and looking overfed but not 100% sure its overfeeding. could be deficiency. They are in a flo n gro system and the pump did stop draining for a day so possible could be overwatering? It's happening to the middle section of plants. They're in 5 gal baskets with hydroton with flooding every 3 hours.

nutrients- advanced nutes sensi bloom with b-52 and big bud. also mammoth p
lighting- 2 1k hps
ppm- 1200 to 1400
ph- 5.6-6.1. ph was dropping so assume ppm is too high?
humidity- about 50 percent

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onegreenthumb said:

how far along are you I see red hairs? the reason I ask is big bud and b52 should only be together for a couple weeks mid flower

something happening in the root zone so plant is feeding off leaves..... my guess to much nutes week root zone could be salt build up and nute lock

Do you flush the system if so how often? How big is res. what type of aeration do you have for res.?

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Kretzlord said:

Looks like burn on those fan leaves. Ppm is higher than I run, but that's just me. Are the stems weak or just droopy leaves?

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larrypizzimp93 said:

what ppm range do you go to? I'm pretty sure it's that with ph dropping instead of rising. that's the only part of growing I haven't gotten down yet. I get so many different answers for it. stems are pretty strong and no droopy leaves. except for very bottom that aren't getting much light

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onegreenthumb said:

I

I have had the same issue I read a lot on RIU so

I backed my nutes down to half strength
I bought a bigger air pump to saturate the water better with oxygen
I quit reusing my nutes and went drain to waste
I started flushing my medium once a week (this is the important one)

some of the best advice I got and has worked great for me

The ladies are pretty happy now

All in all the grow looks geat

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Kretzlord said:

I try to stay between 800-1000, but tbh I'm not positive on the accuracy of my probe lol. PH can be a pain but being off causes lockout from what I've read, not toxicity. A good ph meter is a solid investment for dwc. And that far in it may be the standard yellowing of the lower leaves that many on here speak of. But I am new as well and about a month after flip, so I may be full of shit lol

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larrypizzimp93 said:

When I put nutes in I put max dose of b-52 and big bud then add base nutes till I get to desired ppm. usually 1200. should I put them a diff way? and for flushing how long?

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larrypizzimp93 said:

I have a tri blue lab meter lol. I know my ph,ppm, and temp are within range. I've just always guessed ppm. usually up it till I see burn starting

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