containers

Pictures would be helpful. 
A 1 gal pot doesn't offer a whole lot of root room. Big canopy requires big roots. 

 

Most of those questions I couldn't answer without knowing what your set up is like. Can you put a few photos up

 

Got a smaller picture? lol
Can you return it?
Why are the pots so much taller than the tub? Why are there pots?
That just doesn't look like a very good setup for MJ. Unless maybe you do clones/sea of green...
 
I'm out. I can't help with that. 

 

Those look like the same 4" round net pots that I use. They are so much taller than the table because it is a shallow flood table.
 
That's about the same size flood table I started with for vegging, but it can be used for full cycle.
 
Personally, I don't need a deep table because I only flood about 1 1/4 inches deep, flooding 15 minutes every hour.

 

 
Other than it only being a 2x4 table, why do you reckon it's not a good setup for MJ (if 2x4 is the size of the growing area)?
 
To an optimist, the glass is half full. To a pessimist, the glass is half empty.
 
To an engineer, the glass is simply larger than it needs to be.

 

I'm not the flood table guru that you are. It just doesn't look like what I'd want to use. 
Good thing you're here to help him out. 

 

This is my current 2x6 veg table (I have also flowered some plants in another table just like it). It's 2 ft longer, and I use the extra length to put in newly rooted clones on both ends where the light isn't as intense.
 
It's deeper then the one in your picture, but as I mentioned, it's deeper than it needs to be because I don't flood very deep.
 
I recommend using something to keep the light off of the roots to keep algae from growing on them. I just use pieces of card board (ghetto method).

 

 
I was just wondering if you noticed something that I didn't.
 
I never claimed to be any 'guru', just offering suggestions.

 

How do you start a plant in that? That's what I wonder. 
Clones I can see, if they have roots that reach down to the water level. 
 
I don't know. I'll shut up. I guess I really need to see it better. I can't even tell if those are net-pots. 

 

 
I'm pretty sure they are net pots.
 
Personally, I don't start plants in the flood table. I do same thing with germinated seeds that I do with fresh cut clones; I root them in 50/50 perlite/vermiculite and then transfer them to clay pellets after they have decent roots.
 
I first started with rockwool cubes instead of perlite/vermiculite, but I found that they would stay to wet and cause root growth issues when I transferred them to net pots. Things really started clicking when I stopped inviting rockwool to the party.

 

I can see that. I'm not meaning to knock it, just not my style of growing I guess.
You, on the other hand, have success with it.  Hence my earlier "guru" comment.
 
I don't mind rockwool. Granted, I only ever use the 1" starter cubes. The tiny ones. 
Potted rockwool I blend myself to get it the way I want. 
I have absorbent and repellent. Plus I throw in some hydroton. 
 

 

 

Those pots do look a bit too tall imo, but you do need to have a few inches of clay balls above the waterline otherwise when it floods they float and the roots compact at the bottom. The plant could also topple over in extreme cases. The flood table floods as much as it does so if the pots have a little extra depth it won't hurt, you don't even need to fill them to the top if you don't want to 

 

 
 

 
The container size matters because if it's too small the roots can become pot bound. If they are too big it's a waste of room.
 
I would think that the waterline in that system is already been determined, you want it to flood as deep as possible without a risk of overflowing.
 
It looks like a good system to me. The plants won't be able to have much veg time though, they don't have much room each 

 

I don't believe you have to worry about roots getting pot bound in 4" net pots in a flood table. The roots can grow out of the net pot and fill the table. I grow some pretty big plants in 4" net pots. I only double pot into the larger square pots during flowering for larger base support to keep them from falling over. Now that I'm using a lattice for support, I'm going to flower a table without double potting into the larger pots as a comparison.
 
If the holes are too small in the net pot, the roots will stretch and break the plastic to make the holes bigger when they get fat (if they are healthy and vigorous). I've had root systems pretty much destroy some of those small little 2 1/2 inch net pots after I double potted them into larger net pots when I first started with E&F.

 

 
Why do you think they are net pots? 

 

 
Looks awesome mate. When you get some seedlets in those pots you may want to turn the ufos off and raise the main LED quite a bit. How many watts are you burning there? 
 
I've been thinking of buying the same ph/EC/temp meter, how are you getting along with it?