![]() ![]() In theory, there should be a 0% chance of overflow if I limit my head space in my return chamber properly, which I didn't do on my last tank. On a bean animal if both the main siphon and the first trickle get clogged the 3rd pipe would be there. I believe the thought process is if your main siphon gets clogged the trickle overflow would take over. If you need the assembly to come apart, then you should use a union fitting wherever you want to break apart the assembly. I did 3x32mm holes in tank, same as the 'downflow box'. Ive used a Herbie for a couple of years now with no issues. They are silent, work great and a pretty low maintenance other than every once in awhile adjusting the flow to silence things out.īut, this is my largest tank, will be in my living room over hardwood (ok, laminate) floors and an overflow would cost me a lot more than just a wet floor in there. You will want to glue every joint except the piece that actually extends below the water line in your sump, for example the piece that would dump into a filter sock. Herbie with a 1" full siphon and a 1.5" trickle/emegency.ĭoes anyone have opinions on it? To me, it's sort of splitting hairs. Best Sellers Rank: 98,693 in Pet Supplies ( See Top 100 in Pet Supplies) 440 in Aquarium Filters. A coast-to-coast overflow would be great, but I can't seem to find one for < $150, which I just don't know that I want to stomach that. An overflow box is designed to catch the displaced water from your aquarium as water comes back from the sump. Package Dimensions : 18.4 x 10.6 x 8.4 inches 10.9 Pounds. I just flat out don't trust a single drain, so I get the joy of drilling my own tank and building my own overflow.īeananimal with a long, shallow overflow with 3 drains: 1" full siphon, 1" trickle/open channel and a 1.5" emergency. The water level in the overflow usually seems to end up about mid-way across the secondary tubes elbow. So, I am moving up in the world to a 75 gallon tank which will have either a 20L or something around that size for the sump, maybe even a 40B if it will fit in my stand. Your emergency looks like it may be a bit high. ![]()
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