I think so... thats how i do it... (if i understand you correctly)

I got a res which i fill up via a sink... when i'm done, i take the same hose that filled it up and plug into the control bucket... (empty grow bucket with switches on it)... if the water level is low, the switches drop - and the pump in the res (rubbermaid trash can) kick on and fill till the switches float, then cut off... water is still flowing to the grow buckets at this time, so when the switches float, it only takes a second for them to drop... then the pump kicks on, and refills it...

2x a day all the water gets pumped back to the res... to mix around, and get even ppm and even temps... (all done by timers)... then refills the system.. its working great.. it was my alternative to building a recirculating system... which i didnt want to mess with on this run... and i may never mess with now. who knows... i might change to E&F this summer... it gets hot as hell here.
BloodShot420 Reviewed by BloodShot420 on . If you are worried about the water level in your res... then, you shoulod buy one of these... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7545059175&ssPageName=MERC_VIC_ReBay_Pr4_PcY_BIN_Stores_IT I have one...what a deal...giving away my secrets here...llllllol Rating: 5