Luke Highwalker

you will just have to test it out.

the pumps are putting out pressure...all be it not much. since you dont have roots and crap in your res one 3/4 crossover hose will probably work. but two hoses would be extra insurance.

you can find the ebb n flow fitting on ebay for about 3-4 bucks a set, shipped. i think they are about 7 8 bucks each at the hydro store.

but yeah i meant two crossover lines at the bottom, or maybe one at the bottom one closer to the top, like the overflow hole on a bathroom sink.....better safe than sorry. it would suck to come to a house flooded with 50 gallons of nutrients on the floor.

of course with only a 240gph pump, if it was out running the drainback line you could easily handicap the flow by pinching off the line or sticking a restrictor in the end of the hose.

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