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freshwater sump


buzzy

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Baffles are what you need when using a sump..

I would have them in the middle of the sump so that you can have a spare tank either side as well.

I use Gravel and pumice in the baffles of mine with a big sponge prefilter where the water first runs into the baffle to get to the pump on the other side.

Here is a couple of pics

this is my sump - Its empty in the pic. Ideally the baffles would be closer to the centre however you wouldn't want it under the brace as it would be near impossible to get gravel etc out (which is also a problem with using gravel and glass but ...) On the left it has a compartment that could be filled with bioballs or noodles or chopped up straws apparently but I havn't used them.

Sump2.jpg

This is a good sump I though to - it was on Trademe but down in Christchurch so too far away. It has the dry / trickle section on top and the trickle system does look like it would be a great filter if you can get the water returning evenly over it all. The whole sump even has a big drip tray underneath it by the looks.

Sump.jpg

One thing I do know from experience is the more dense your media is the less water you can get to flow through a given surface area. So if u had a 5000 gph pump your sump needs to allow 5000gph running through the baffles or it will just flood over the baffle without filtering it. So sand is out more than likely as it is too dense.

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