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These fish don't really care which way the current goes, as long as there is some current.

Setting up a "river tank" which is where you have the inlets on one side and the outlets on the other is more work, and doesn't actually make the fish any happier in my opinion (that is for THESE FISH, as they are quite adaptable to varying conditions - doesn't apply to ALL fish!). Better to spend that effort/money on setting up the breeding-tanks.

Also, as someone (Plecobreeder, I think) said once, corners in the tank are good for catching fish. Round tubs make the chase a lot longer... This is particularly important in a grow-out tank where you need to net many fish quite frequently...

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Mats

i was thinking using a huge net lining the tub then the sponge filters and the heater, so when i want to catch something i just lift the whole net out ( does this sound like a good idea?

The problem is that the net would then cause "dirt" to accumulate on both sides of the net, where on one side you have a filter, but not on the other. I don't think it's a good idea - but I haven't tried it. Just try to find some rectangular tubs, that'd be the best way - you don't REALLY want to get all the fish out to get a few out anyways...

Bristlenoses are also pretty good at tangling themselves into nets, and that could definitely cause a problem if there's a permanent net there...

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Mats

the containers are rectalgular with corners but for 20 dollars for 50 gallons i will live with it

hello all, I don't know if I'm wrong but I find everytime I change the water the plecos die. I haven't changed the water in my longfin pairs tank in around 2 months, they are healthy and pumping out around 60 fry each time. also does anyone here add salt to the tank for any reason?

thanks alot

john