Backyard Aquaponics
A place to discuss aquaponics

Hi everyone, im new in AP, i have just set up an AP raft sistem, i have a 2 barriels fish tank, and 2 rafts (half barriel), wich drain into a sup tank with a pump wich send water back to te FT. In beetween the FT and the rafts i have a filter (90 ltr), i should like to know why my sup tank (100 ltr) doesnt keep the level also regulating the fish tank exit. The sup tank get ampty in like 1 hour and half só i tried to Stop for 3 min by a timer só the Sup can Be filled up again bafore the pump start again. Ir somebody can help me i would really apricieate. Thanks

Welcome to the forum Marco.

Could be a lot of things going on. Do you notice the water accumulating somewhere else in the system?

Pictures might help, this is a tutorial on posting pictures - http://www.backyardaquaponics.com/forum/viewtopic.php?f=4&t=21754

Sounds like the pump is 150 Liters per hour and the returns might be too small? If so the simple thing to do would to put a valve on the pump and cut down the flow. There is a limit on how much free water can flow back in return pipes. After all it is not under pressure. I believe the size should be from 2 to 3 times the feed flow pipes. I would also check the level of the return pipes to assure they are tilting/pitch the right way. If the level is up in any place the pipes will accumulate a massive amount of water. Tap on them, are they full or empty? They should all sound hollow and be nearly empty. 1/4 inch off, is all it takes.

As scotty said a photo or drawing would help