![]() You might have to use more CO2 with a design like the Lifereef, but that's about all. This pump has a 1 1/4' outlet and runs 1300 gph at 5 of head (2100 no head). The return bulkheads are 3/4' thread x thread with a 3/4' locline on the end. Now since its only a small 40 gallon breeder do you guys think I will be ok with just a herbie overflow system or do I need to do a bean animal system I know bean animal is safest but im limited on space. The ghost overflow box bulkheads are 1' thread x slip with the slip part for easy removal of the overflow box standpipes. Also, with all that being said, either filter design will work just fine on your system. Im talking to some people and a sump I think is going to be my best bet. It's not so much one design being better. You don't want the massive gas exchange like you do in a reef. In a planted tank you have different factors going on. Also, bioballs under water tend to be big oxygen consumers because of the bacteria on them. Its a full height corner box and I had options of left side, right side or even center. This is why the tower with the bioballs is not flooded. Im going with a corner overflow I found on ebay. In this type of system you want the maximum gas exchange, CO2 out and O2 in. The Lifereef filter is designed for a SW reef system. You see the differences in the wet dry filtration design because of the intended use of the filters. This means that it take a slightly higher water level in the tank for it to operate. The emergency pipe goes up because it should only come into use when the main pipe fails. The secondary pipe could really go in any direction, since it doesn't act like a siphon. The intake on the main pipe needs to be face down because this pipe acts like a siphon. The emergency pipe also works like a conventional overflow, and is there just in case the main pipe fails, either by getting air in it or by getting clogged up. This is done indirectly by controlling the volume of water going through the main pipe. It is set up so that only a trickle of water runs through it. The secondary pipe works like a conventional overflow. The valve is used to control the volume of water through the main pipe. This is why you often see a valve used at the sump end. ![]() Under normal operation the main pipe runs like a siphon, in that there is no air inside it. The bean animal overflow is designed to be as silent as possible.
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