Unless you are mixing your nutes in another container,
it is best to keep the roots out of the main rez.

Keeping the roots out also helps the pH stay more stable.

.

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4 inch PVC Aero with Chiller
Aero Space Shuttle
Vicious NothernBerry hempy bucket

Thanks Earl. I think I may end up aving issues with roots in my res.... the roots are already in there and I've got a long way to go.

pick them up and put them in the tube.

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4 inch PVC Aero with Chiller
Aero Space Shuttle
Vicious NothernBerry hempy bucket

We may have a problem. I initially thought the plants were suffering from nute burn although my PPM has never been over 470. I think I have some sort of deficiency and considering that this is my first hydro grow, I'm not sure what it may be. I've taken some good pictures of the condition and would appreciate any feedback on a fix.

I actually recalibrated my ph meter this morning and it was off. It should have read 4.0 when submerged in the 4.0 solution but it read 4.5 so I fixed that.

I think my ph was too low and it has caused a deficiency.

I do not think this is nute burn. For the last 4 days I've ran them at 300 PPM.

This condition is on all plants.

.......wow, thought by now you'd have all kinds of answers. I wish I had them for you..... Your meter definately made a difference......so I would lean to defs too, or lock-out........ The nute always sounded low to me, but I know that Earl KNOWS what he's talking about and knows your nutes....
Hope things get better for you quick-- I am usre they will--all else seems perfect!

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"I'd love to see things from your point of view.....I just cant get my head that far up my ass"--stolen

Are you using the connoisseur ?

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4 inch PVC Aero with Chiller
Aero Space Shuttle
Vicious NothernBerry hempy bucket

Why would I be using that now? I'm still vegging.

I am going to use it when I flower.

so exactly what are you using now ?
ppm ? and pH ?

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4 inch PVC Aero with Chiller
Aero Space Shuttle
Vicious NothernBerry hempy bucket

Room temp = 70*
Res temp = 66*
change res every 7th day
PH = 5.9
PPM = 500 (1/2 Sensigrow A & 1/2 Sensi grow B)

I just foliar fed them 1/2 Teaspoon of garden lime per quart of water as instructed for a calcium deficiency.

I have had the same symptoms.

I think it is from the roots being in the rez
when you make pH adjustments
and changes to the nute load.

This happens to my plants in the space shuttle.
Only the plants with roots in the rez.
the other plants weren't affected
until they grew roots long enough to reach the rez.

In the 4 inch aero unit
I lifted the roots and put them into the tube
and they were trained to grow there.

I didn't have this problem in the 4 inch system
because I kept the roots from growing into the rez.

It is probly not too late to stuff the roots into the tubes.

You just need to make sure the tubes are draining well
after the roots fill them at the drain end.

I calilbrate my pH meter
every time I mix a new batch of nutes.

5.9 seems a little high and will inhibit the uptake of calcium.
AN recommends between 5.5 and 5.8
so I use 5.65-5.75
I would use a product like Botanicare Cal-Mag Plus
to add calcium if you need it.
Not lime.
I think the lime will lock out soluble calcium
without bacteria to break it down.

We don't want to have any bacteria in out aero systems.
There is no benefit
and some negatives.(smell, cloggs, etc.)

.

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4 inch PVC Aero with Chiller
Aero Space Shuttle
Vicious NothernBerry hempy bucket