I also just switch to DWC but i was formaly ebb an flow the system you descibed sounds good lets do some research on that space issue i'm also interested i'll switch to one of these 55 gal rubbermaids or 2 lol well do some research on your hydo faq and have a back up plan for power outage if so your roots could drown dun dun dun i got a generater well good luck