rockys_pride;87542 said:
Crustytheclown did an overflow one. My best advice is to head over to nano-reef and see what they do
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I just used a 3gal pico for a fuge for my 14gal bc. I didtnt drill or put in an overflow. I just used a siphon pvc to the fuge and a small return back. Its a little risky because sometimes snails crawl over the ends of the siphon tube, but ive dialed it in so that if the siphon breaks the pump will only put back a little water into the display as to not cause a flood. Than the only thing that could go wrong is the cheap pump would run dry. Than also if the pump dies, ive positioned the end of the siphon tube thats in the back of the bc, ( last - 3rd chamber) just under the waterline. So that if the water in the two tanks tries to level out, it wont flood the fuge and the dt tank level wont drop to an undesirable level. Ill post some pics.
Refugium
Its been running steady for a couple months with no problems

I had bought a pico that i started up for another tank, than realized wait! I have to many. hahah. Im growing cheato, calurepa and mangroves in this fuge.
Thanks for the reference Jamie