i want to get some more flow from my hob overflow. it is rated at 600 gph. one U tube and one 1in drain pipe. if i add another U tube and another 1in drain would that get the flow at about 1200 gph. not quite sure this would work so im askin all you diy gurus. if it wont work i guess ill have to buy a new one. are the U tube models better or the ones without? thanks for any help anyone might have.
more flow from hob overflow??
- Thread starter jck9
- Start date
BoomerD
Well-Known Member
Nah, unfortunately, it won't really work that way. The teeth in the overflow restrict the flow, PLUS, the bulkhead & plumbing from the overflow to the sump will be the final restriction. Jeff from Lifereef warns:
"Do not add a second siphon tube to increase flow rates. ou will reduce the flow rates through both tubes, causing bubbles to accumulate in both siphon tubes."
"Do not add a second siphon tube to increase flow rates. ou will reduce the flow rates through both tubes, causing bubbles to accumulate in both siphon tubes."
guess ill just buy a new one. what do you think about this one?eBay: Aquarium Overflow Box 1200G w/ lift powerhead for Reef (item 160105843565 end time Apr-18-07 17:17:44 PDT)
BoomerD
Well-Known Member
I'll second that Mike...
Lifereef is hands down the best in the biz. I've used them on/off for over 15 years, and NEVER had one fail to re-start or lose siphon in any way...
eBay: Lifereef Filter Hang on Overflow (item 160104708219 end time Apr-15-07 19:39:07 PDT)
Lifereef is hands down the best in the biz. I've used them on/off for over 15 years, and NEVER had one fail to re-start or lose siphon in any way...
eBay: Lifereef Filter Hang on Overflow (item 160104708219 end time Apr-15-07 19:39:07 PDT)
how about this one? i need about 1000 gph. i have this one in the 600 gph model and it works great. just want to see what everyone says about it. thanks for the info
eBay: AQUARIUM OVERFLOW BOX DUAL FOR SUMP WET DRY 1200 GPH (item 120107933550 end time Apr-18-07 06:47:32 PDT)
eBay: AQUARIUM OVERFLOW BOX DUAL FOR SUMP WET DRY 1200 GPH (item 120107933550 end time Apr-18-07 06:47:32 PDT)
mps9506
Well-Known Member
That'll work. Just make sure you have enough flow going through through their to keep bubbles from accumulating in the J tube.
FWIW Boomer, I like the Lifereef design, I have yet to understand why other manufacturers can't put that little bit of plastic in their boxes to make sure the end of the j tube always stays submerged. But I never had issues with the generic boxes as long as I made sure that the stand pipe extended above the bottom of the J tube.
FWIW Boomer, I like the Lifereef design, I have yet to understand why other manufacturers can't put that little bit of plastic in their boxes to make sure the end of the j tube always stays submerged. But I never had issues with the generic boxes as long as I made sure that the stand pipe extended above the bottom of the J tube.
rDr4g0n
Well-Known Member
the weir style overflows are the ones that dont use j tubes. i know for a fact that it maintains a siphon when stopped because i use one. i havent had any troubles. if bubbles or air accumulate in the top of the weir, a powerhead with the venturi tune connected to the weir will suck the air out.
no probs from mine so far, and it was the cheap $30 ebay one. normally id agree that cheap ebay stuff sucks, but at the time i didnt have the money to buy a better one. since i havent had any trouble i see no need to replace it.
no probs from mine so far, and it was the cheap $30 ebay one. normally id agree that cheap ebay stuff sucks, but at the time i didnt have the money to buy a better one. since i havent had any trouble i see no need to replace it.