Can you please explain how you loose height with an ebb and flow system?
Few question about ebb & flow in rockwool
- Thread starter coxnox
- Start date
Hiddenjems
Well-known member
The reservoir goes under your tray, you lose a foot to a foot and a half. The containers will always sit off the floor.
Now the new ebb and flow with buckets sits on the floor. But that system is just a dwc setup that’s not on constantly, and will be sensitive to solution temps just like dwc.
Yes mine is a bucket system, not like a DWC at all, the system fills and drains back to the rez and your right it is subject to temp flux.
Hiddenjems
Well-known member
It’s exactly like a dwc setup, except it’s only full 5-10% of the time. All the same solution temperature and clogged drain issues.
Not saying it doesn’t work well. You’ll need pretty cool ambient temps, a chiller, or to be able to put your Rez and buckets right on a concrete slab.
My tables can sit in an 80* room indefinitely without root issues.
Yeah just the height of the rez + flooding table on top of it make me loose 35/40 cm
My 5 gallon pots sit on the floor and they are 14 inches/35 cm. When I was running DTW, table with drain tray was 10 inches and the top of the fabric bags were 8 inches. So a total of 18 inches/45 cm, I've gained 4 inches/10 cm of grow space Not that it has ever been a problem as I either used a net or grow vertical on a trellis.
Hiddenjems
Well-known member
Pretty much.
I run flood tables with indica dominant strains in a sog setup. Mostly because I can’t grow really tall plants in my spaces. I also like to run dwc if I’m in a basement or on a concrete pad in a well cooled space.
The flood tables can run an easy 5-10* warmer rez temps than dwc.
Another reason flood tables make sense in rooms with co2 enrichment. Keeping the rooms 7-8* warmer to help raise plant metabolic rate can wreak havoc on a dwc setup with no chiller.
I really like the look of some dwc trees, but running a whole operation that way is a lot of money in chillers and even more electric use.
St. Phatty
Active member
Last 2 times I did ebb and flow with rockwool, the platform where the plants were was about 18 inches off the ground, and the plants were about 4 feet tall. The lights were about 2 feet above the top of the plants.
Both times in a normal bedroom with an 8 or 9 foot ceiling.
With 6 inch cubes.
Hiddenjems
Well-known member
Fabric pots on the floor would have given you another 6-12”. Which can be a difference maker.
