Other than using one, are there any other options to prevent fry from being sucked up in a HOB filtration system.
One that would not restrict the water flow any more than the OM part.
Use various pump intake sponges for like mag series pumps and larger ones my overflow. I think the larger ones are for pond filters. or overflow filters.
Most hardware/department store sponges are not porus enough.
I do have to rinse out the sponges all the time. But even with that the motor does seem to work well even if making some noise.
I kinda like the freezing of the sponge idea. May just have to try that one next time.
I just take a regular ole steak knife and cut a slit the width of the intake in the sponge almost to the very bottom. Slides right on the intake tube.
That's your best option for fry.
Not to discount the use of nylons, they can be used as well. But, with them, they don't help restrict the flow which can still cause fry to become lodged up against it.
In a manner a speaking....yes. The fry are too small and not strong enough to pull free of the current.
Now...with the nylons, they will prevent the little ones from getting sucked into the filter, but they won't slow the current which could cause them to get stuck.
With the sponges, they will help reduce the suction from the pump and provide a safer ground for them. It will also add to the BB.
freeze the sponge.hmmm, soo many different/good ideas when you ask on a forum like this. Great ideas from all of you. Thats exactly why i browse forums like this, i have 5 tanks set up and can always use any time/money saving ideas. Thanks guys.
When I first started breeding guppies in a small tank (only 5 gallons with 1 boy and 3 girls) I used a tetra whisper filter. It is meant for up to 10 gallons and it was not too strong. I didn't even realize at first the fish would get sucked up. Then one day I went to change the filter and a fry was swimming around in the filter canister. I realized it was because the motor isn't exposed to the water in this model and therefore doesn't damage the fish. I never lost any fry with that filter and occasionally found one or two either swimming in the canister or when I pulled the filter out they were on it but perfectly fine. I did check it every day twice a day however, and don't think they would do too well getting pushed against the filter for a whole day.
With my larger filter I use a filter bag loosely tied to the intake have never had a fry get stuck. I guess it depends on the filter/fry sizes.
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