Does this growth rate look ok?

[danlboy]

im on my 2nd DWC crop roots always in the water and did fine

[herbie the love bud]

Yeah the water level is about a half inch below the net pots. I think the concentration of nutes might have been a little high. I read an overgrow FAQ that said to check the TDS daily, if the TDS is going UP then the plant is drinking more water and the concentration of nutes is too high. If the TDS is going down, then the plant is drinking up the nutes and the base nute TDS can be raised.

So I think the plant may have been a little stunted due to high nutes and that would probably answer the yellowing too.

What does everyone think? Thanks.

[Opie Yutts]

im on my 2nd DWC crop roots always in the water and did fine

There's got to be some point where the water stopped going up the plant. Surly the water did not completely cover all the roots? Or is this what you are saying?

[Opie Yutts]

Yeah the water level is about a half inch below the net pots. I think the concentration of nutes might have been a little high. I read an overgrow FAQ that said to check the TDS daily, if the TDS is going UP then the plant is drinking more water and the concentration of nutes is too high. If the TDS is going down, then the plant is drinking up the nutes and the base nute TDS can be raised.

So I think the plant may have been a little stunted due to high nutes and that would probably answer the yellowing too.

What does everyone think? Thanks.

I think you could be absolutely correct. I don't know why I didn't mention this as a possibility earlier, since it is a common mistake to over fertilize youngsters. They should have no nutes for the first two weeks, then weekly you can increase to 1/4, 1/2, then full. Of course this is just kind of a basic guideline. Adjust as needed. If your plants look like they are struggling a little, increasing nutrients might make it worse. Certainly if they are getting stressed from too much nutrients, they will not grow as fast as is optimal.

[SCIENTIXT]

SCIENTIXT, I don't see any light leaks in his res.

Then obviously you didn't blow up the pic and look close enough. If you blow up the second pic showing the three plants, you can see where light is getting in very clearly. You just have to know where to look.

The netting on the net pots in the pic goes all the way up to the lip of the pot. The grow rocks are not settled against the sides of the net pot which is letting light in. You can see it on the closest plant.

Check it out.:thumbsup:

[Opie Yutts]

Oh I think I see what you are talking about. The net pots don't seat perfectly on the lid. Is that what you are seeing? I guess it would be nearly impossible for them to seat all the way due to those ridges on the lid. Although it is of course best to have no light leaks, I don't think that little bit would cause harm. I did a grow a few months ago and was putting round pots into square holes in a DWC. There were dime size (roughly) holes one each of the four corners of each pot. The plants came out fine.

herbie, if you did want to fix it, you could sand out the hole just a touch more, and the pot would fit down a little better. You could also get some artists putty or something similar to put around there, or just some white cardboard. I don't see it really being a problem, but it would be better if you covered it. If not for the leaks, at least for the white reflection bouncing light back at the plants.

[herbie the love bud]

Then obviously you didn't blow up the pic and look close enough. If you blow up the second pic showing the three plants, you can see where light is getting in very clearly. You just have to know where to look.

The netting on the net pots in the pic goes all the way up to the lip of the pot. The grow rocks are not settled against the sides of the net pot which is letting light in. You can see it on the closest plant.

Check it out.:thumbsup:

Eyes like a hawk! Yes it's true that those net pots have holes all the way to the top and that it is very hard to seal them with hydroton. I've switched my future seedlings to a new net pot whose holes are not to the top and even fit a bit better.

But in truth, neither is the problem, I have white mylar covers over the net pots, the ones that NGW sells. Hard to take a picture that way so I removed them for the photo.

I can't remember if I already mentioned this, but meter the TDS daily, those ppm is rising, so I think it is on nutrient overload. I did my weekly water switch today and I have dropped the base nute level down.

Thanks everyone! We'll see what happens in a few days.

[Opie Yutts]

I have a feeling that will do the trick, if you lowered it enough. Crossing fingers.

My feelings are obviously from the G-13's extra sense kicking in. Just a minute, I'm seeing the future again...