dkw Posted May 10, 2009 Share Posted May 10, 2009 Hi Guys, Just after some opinions on how to filter a 2ft fry raiser, I've tried the following with limited success: 300LPH internal power filter (no bio media) 700LPH cannister filter throttled down to about 400LPH (with bio media) Air driven sponge filter on top of the cannister. I've had more success with the cannister filter, however I still think its too much flow for the little guys. I have about 50 or so fry in the tank at any one time. Should I start at looking at rigging up some custom bucket style filter to increase water volume? perhaps a HOB with the ability to hold bio media? Would love to hear how the breeders out there do it. Many thanks. - Dan. Link to comment Share on other sites More sharing options...
Gombe Posted May 10, 2009 Share Posted May 10, 2009 They all work. 400lph won't worry your fry. Use a spray bar to even out your flow across most the tank. Cover your intakes with bio sponge so your filter doesn't suck up most your fry. Link to comment Share on other sites More sharing options...
Josh Posted May 10, 2009 Share Posted May 10, 2009 Use a sponge filter. You wont have to worry about fry getting sucked up and any excessive food will be sucked onto the sponge for the fry to graze on Josh Link to comment Share on other sites More sharing options...
ant265 Posted May 10, 2009 Share Posted May 10, 2009 I only have 1 medium size sponge filter for each of my 2'x12"x18"H tanks which has sufficed for upto approx 50 or so fry with 30-40% water changes weekly or fortnightly. Cant see why you would be having dramas unless the filters you have tried havent been cycled HTH Link to comment Share on other sites More sharing options...
dkw Posted May 10, 2009 Author Share Posted May 10, 2009 Thanks guys, It's the flow thats worrying me the most and I'm sure that with the cannister throttled I'm not doing the impeller any good. I think I'll whack another sponge filter in there and phase the cannister out, somehow keeping the media. - Dan. Link to comment Share on other sites More sharing options...
Rod54 Posted May 10, 2009 Share Posted May 10, 2009 Good move Dan Sponge filters are brilliant for fry....providing mechanical and biological filtration They are extremely efficient because they are air driven the flow rate is quite small but this allows them to sustain a very high population of bacteria....just what you need in a heavily stocked grow out tank Link to comment Share on other sites More sharing options...
dkw Posted May 10, 2009 Author Share Posted May 10, 2009 Thanks for your response Rod, I guess I'd be alright if I took the filter media out of the cannister and hung it in the tank in a stocking or something? I have one sponge filter in there already which should be seeded by now. - Dan. Link to comment Share on other sites More sharing options...
Rod54 Posted May 10, 2009 Share Posted May 10, 2009 I'd bet the sponge is already taking most of the load.... I wouldn't worry about the media in the canister.... Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.