roots look great, just do less drip cycles and you will see, 15 minute drips once every 3 hours and your plants will reward you for this

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Yep, that's the problem. Rockwool is highly absorbent and can only be watered about 1x/day.

Once the roots are out of the cube and it has been planted in pellets which are frequently watered, the cube is redundant and no longer needs watering. The roots will knit into the damp pellets in no time.

Use a drip ring to water plants in this sort of system.


Buy 'em or make your own. It's just a tee fitting with a length of plastic tube with a bunch of 1/8" holes drilled in it.

This will wet the pellets without wetting the RW cube.

Unfortunately, the 'Greenman' grow vids on YouTube depict drippers directly watering RW cubes which have been nested in pellets. This mistake has been widely duplicated as a result. The result is exactly what you're seeing in your system.

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Get a harvest every 2 weeks - A batch of clones in rockwool - Al B. Gone

You should never water during lights-off. Transpiration all but stops in lights-off and the plants will get by in the moisture in the rootmass.

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Get a harvest every 2 weeks - A batch of clones in rockwool - Al B. Gone

I'd prefer 5 min watering durations each hour during lights-on.

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Get a harvest every 2 weeks - A batch of clones in rockwool - Al B. Gone

Yea 4x8 is a pretty big tray to flood but I have seen other guys do it. Your right, you would be going through a lot more nutes though. One option you have is transplanting into two gallon pots. In a 4x8 tray you could probably accommodate at least a dozen pots I would think, don't trust my math though. But with that many pots in the tray you would be displacing a good amount of water allowing you to stick with a some what smaller res. Also the two gallon pots will give you some really good root expansion for larger plants. The res changes wouldnt be to bad, just use the existing pump to pump in to another bucket and drain.
I use two 2x2 trays, one veg and the other for flower each will accommodate four pots. I only go with three pots because I'm limited on grow space, but with the three plants I ended up with 13oz dried bud on my last grow. Here's a couple Pict just as an idea. Still may not be feasble, Just an idea.

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"Logic will get you from A to B. Imagination will take you everywhere."

If you're doing SoG (flowering clones immediately after they set root, no veg time), pots can be really rather small as the plants will be rather small. SoG plants finish up about 30-40" tall, which tailors them to artificial lighting. Even the mighty 1000HPS can only penetrate foliage so deeply, meaning tall plants are not the indoor grower's friend. The SoG method relies on greater numbers of smaller plants to make up the yield. All branching on the lower 1/3 of the plant is pruned off, usually at the ends of weeks 1 & 3. Each plant will be a top cola, meaning average bud size and density go way up. No tiny little popcorn buds to manicure, either.

I use 175mm x 175mm pots, something like 1 US gallon, but they could easily be smaller, perhaps 140mm. I fit 23 of those in each of my 900x900mm trays. Reservoir size is just about ideal at 5L per plant. At this size, the nute strength remains fairly constant as the water level drops, meaning the plants are using water and nutes at roughly the same proportional rate.

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Get a harvest every 2 weeks - A batch of clones in rockwool - Al B. Gone

And if you really want to go with a flood setup, the poster above me Al b. fuct can set you in the right direction. He really knows his shit.

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"Logic will get you from A to B. Imagination will take you everywhere."

yes indeed, I know my shit! Brown, lumpy, smells bad.

There's a gazillion ways to water a plant. Some methods better suit some styles of growing, but for the most part, if it wets the roots, the job's done.

SoG just happens to work well with plants in pots of some sort of media, watered with a flood tray. Allows you to move plants around, remove poor performers, etc. Flood systems are also deadly simple to set up and operate. That simplicity makes them stupidly reliable. Can't clog, easy to clean.

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Get a harvest every 2 weeks - A batch of clones in rockwool - Al B. Gone

Lol, guess I could have phrased that a little different. Without doing the praise Al thing, or adding the little ass kisser dude, I'll just say that personally I have learned more from reading your posts, than from reading any of those retail grow books out there. So thanks.

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"Logic will get you from A to B. Imagination will take you everywhere."

the reason I do dwc and not flood is because it doesn't require pumping water and installing fixtures.
I'm interested in a flood table but dwc eliminates having to flood and drain to waste and uses nutrients more efficiently.
But I would like to know how to properly operate flood tables.

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