05-23-2011, 11:55 PM
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Originally Posted by Byron
This is the type I have in my 10g, a Hydor; supposed to be good filters, and mine certainly collects mulm. When I had the Farlowella fry in this tank they would go down the tube, but they stuck on the side and seemed to enjoy the bubbles.
I wouldn't think a guppy could get "stuck" in this. If the water level is an inch or more above the top of the tube, I'm sure a fish could swim out easily.
I use the hydro sponge filters and it would be quite difficult for fishes to hold themseves in place inside the lift tube while this sponge is in operation.Force of bubbles rising in the tube would be trying to force fishes up and out .
I have juvenile plecos who are always swimming inside the lift tube and rasping on biofilm and or mulm that collects inside the lift tube and it takes considerable effort for them to remain there.
Cory's occasionally swim down the tube as well, and can easily swim back out.