rockfisher Posted March 31 Share Posted March 31 Have you seen it used one of these.Do think it works? If so why did it die off. I have seen these brand before but never a different brand. 1 Link to comment Share on other sites More sharing options...
Pepere Posted March 31 Share Posted March 31 I saw a different brand years ago… It will work, but water levels will be crucial… and flow will not be as much as a powered one. air lift largely limits you to 2 inches of head at most, so you will want water level to be fairly close to top. As evaporation occurs and water level drops, flow can stop. likely ceased as powered ones have much more flow. 2 Link to comment Share on other sites More sharing options...
Val Posted March 31 Share Posted March 31 (edited) Awright! Old school. Love it! Edit: Oh right, you asked a question.... I think Pep is spot on. An air stone isn't going to pull as much water, so yeah, lower flow rates. Edited March 31 by Val 1 Link to comment Share on other sites More sharing options...
Pepere Posted March 31 Share Posted March 31 It has the advantage of being air driven avoiding electricity in water. Andit has the filter media outside of the tank for ease of changing, not taking up tank footprint real estate… The water level restrictions and low flow would steer me more to a box filter myself. 1 Link to comment Share on other sites More sharing options...
xXInkedPhoenixX Posted March 31 Share Posted March 31 Ha! Super cool! It looks JUST LIKE a hang on side breeder box I use, the air pump isn't super strong of course so it just exchanges out the water. Neat! 2 Link to comment Share on other sites More sharing options...
Administrators Cory Posted March 31 Administrators Share Posted March 31 I've got one of these in my office. In case I need to explain something to a manufacturer when I eventually start working on a hang on back. Link to comment Share on other sites More sharing options...
Flying fox 6523 Posted March 31 Share Posted March 31 On 3/31/2023 at 2:38 PM, Cory said: I've got one of these in my office. In case I need to explain something to a manufacturer when I eventually start working on a hang on back. I'm wondering if I could get a ugf system & hook up to a hob intake tube to it that's IF the tube would fit the tube of the ugf, have you tried something like that? Link to comment Share on other sites More sharing options...
Administrators Cory Posted March 31 Administrators Share Posted March 31 I haven't done that. I think for the most part, an undergravel filter itself will just be good enough. That being said, you could "optimize it" by running say purigen and such in the hang on back part. But I feel like this is doing a lot to optimize something that is unlikely needed by 99% of the hobby. Link to comment Share on other sites More sharing options...
Pepere Posted March 31 Share Posted March 31 UGF likely to have much more flow as it wont suffer the headloss assuming the outlet is at water level. run that over the top into a hob and you cut the flow dramatically. Link to comment Share on other sites More sharing options...
Pepere Posted March 31 Share Posted March 31 2 inches of head in 1 inch pipe could move about 100gallons of water per hour at zero head loss. raising the water 1 inch above waterline cuts that flow in half. 50 gallons per hour sounds pretty good, but the medium moving through that pipe is not just water but also entrained air. And once the air i hits the waterline it stops taking up volume,… I am curious now to lower my water level in my tank and use a pyrex 2 cup measuring cup to get a feel for how much flow my undergravel lift tubes flow this weekend when I do a waterchange.. 1 Link to comment Share on other sites More sharing options...
rockfisher Posted March 31 Author Share Posted March 31 Thank you @xXInkedPhoenixX @Val @Pepere @Flying fox 6523 I have UGF’s in a few tanks. They are by far the tanks with the clearest water. I don’t think you would need anything else. I have 2 each with just the air for the lift and 2 have power heads. There is not a whole lot of difference in the looks of the tanks. I like the powers heads in the bigger tanks just for the increased water flow. Also do you think this would be a idea for something like shrimp. 1 Link to comment Share on other sites More sharing options...
jwcarlson Posted April 1 Share Posted April 1 (edited) Agree with Inked, hang on breeder boxes just like this. Edited April 1 by jwcarlson 1 Link to comment Share on other sites More sharing options...
rockfisher Posted April 1 Author Share Posted April 1 Thanks @Cory for your input. Link to comment Share on other sites More sharing options...
Flying fox 6523 Posted April 1 Share Posted April 1 On 3/31/2023 at 6:06 PM, rockfisher said: Thank you @xXInkedPhoenixX @Val @Pepere @Flying fox 6523 I have UGF’s in a few tanks. They are by far the tanks with the clearest water. I don’t think you would need anything else. I have 2 each with just the air for the lift and 2 have power heads. There is not a whole lot of difference in the looks of the tanks. I like the powers heads in the bigger tanks just for the increased water flow. Also do you think this would be a idea for something like shrimp. I don't know anything about shrimp but depending on the power output on the power they have would be my concern. I have power pumps but I'm not sure if they would be good for a 75 gal & danios, cause there like 400-800 gph pumps & haven't seen any with less power than that. Link to comment Share on other sites More sharing options...
Flying fox 6523 Posted April 1 Share Posted April 1 (edited) On 3/31/2023 at 3:43 PM, Pepere said: UGF likely to have much more flow as it wont suffer the head loss assuming the outlet is at water level. run that over the top into a hob and you cut the flow dramatically. "run that over the top into a hob and you cut the flow dramatically." How do you do that ? cause that's what I was thinking, just didn't know if it could be done or not. Till I seen your comment. Edited April 1 by Flying fox 6523 Link to comment Share on other sites More sharing options...
Odd Duck Posted April 1 Share Posted April 1 (edited) This is essentially like the Fluval HOB breeder boxes and I ran across a video where somebody had turned one of the breeder boxes into an HOB filter by adding a pump to it. Made me laugh because you can get equivalent size HOB filters for less than the Fluval breeder boxes. The water level is critical for the Fluval breeder boxes that are air driven because they don’t have a lot of lift to them. If you rigged a funnel on the end of the intake and ran an actual airstone, you might get more lift, but as they are with the very small intake tube, they just don’t have a lot of flow. Rigging to a UGF might improve the flow through the filter using a bigger tube and more air, but it’s still going to be weak in comparison to a pump. Which is not to say that it couldn’t be a decent supplement or work just fine for a very small tank, especially for a betta or shrimp tank where you don’t need or want much flow. You could probably rig a small pump to it if you wanted but that would defeat the purpose of having it only air driven. Edited April 2 by Odd Duck Typo 1 Link to comment Share on other sites More sharing options...
rockfisher Posted April 2 Author Share Posted April 2 (edited) I had never seen one. I was thinking I could be good with shrimp. I will most likely do just a UGF. I’ve seen the ones that are made for just shrimp with a box built into the tank I haven’t done one like this and I’m alway up to try something new. That said I was thinking more of the standard UGF. Plates with the substrate over it. Edited April 2 by rockfisher Link to comment Share on other sites More sharing options...
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