smidey Posted July 25, 2013 Report Share Posted July 25, 2013 maybe my 5000lph is pushing more than rated, even aimed the way it is it is creating a skimmer action on the far end of the tank (2.0m) and is leaving food particles on the glass just above the water line as the ripples lap against it. Quote Link to comment Share on other sites More sharing options...
camtang Posted July 25, 2013 Report Share Posted July 25, 2013 i'd rather not get girly plants thanks, tempting but no thanks. the tropheus destroy most plants. What plants have you tryed? That sounds like one hardcore 5,000 Quote Link to comment Share on other sites More sharing options...
Ira Posted July 25, 2013 Report Share Posted July 25, 2013 What plants have you tryed? That sounds like one hardcore 5,000 Definitely need one with a wider, lower velocity flow. Sounds more like a pond pump or powerhead rather than a "Wavemaker" Quote Link to comment Share on other sites More sharing options...
smidey Posted July 25, 2013 Report Share Posted July 25, 2013 just val. it's one of these, Sunsun JVP 102B http://www.trademe.co.nz/pets-animals/f ... 008283.htm Quote Link to comment Share on other sites More sharing options...
camtang Posted July 25, 2013 Report Share Posted July 25, 2013 I was going to put some val in my tank this weekend.... maybe not now Quote Link to comment Share on other sites More sharing options...
smidey Posted July 25, 2013 Report Share Posted July 25, 2013 give it a go, might be ok. mine doesn't get totally destroyed, just the majority at times then it comes back. Quote Link to comment Share on other sites More sharing options...
Finznfangs Posted July 25, 2013 Author Report Share Posted July 25, 2013 I am strugging with val in my discus tank bending in the current, i think i am going to change that to a ducks bill just to see. But i think i really need to trim my val and some other plant i dont know, they are nearly 1M long! Hopying the trim will promote more shoots. On the original topic note, i changed the spray bar last night to the end of the tank with the inlet pipe, put the airstone at the opposite end, and put the HOB filter just past halfway at the opposite end of the spraybar. They seemed to like the change, they are very active around the HOB and a few of them are dancing around the spraybar. :thup: I am keeping a close eye on them. Quote Link to comment Share on other sites More sharing options...
Ira Posted July 26, 2013 Report Share Posted July 26, 2013 I am strugging with val in my discus tank bending in the current, Struggling with it? Wait, are you expecting the val NOT to bend in the current? Quote Link to comment Share on other sites More sharing options...
Finznfangs Posted July 26, 2013 Author Report Share Posted July 26, 2013 Lol, I know it's going to bend, I am just trying to control it so it doesn't bend too much. No I am not a control freak! :facepalm: Quote Link to comment Share on other sites More sharing options...
Ira Posted July 27, 2013 Report Share Posted July 27, 2013 Thought I'd try taking a little video of my tank. This is with two CF1200s and two Seio M820s...So, according to specs of everything that would be up to 8600 LPH of current. Yeaahh...I'm sure they're not anywhere near that. But it could use more current. http://youtu.be/1OdZh2dxjBk It's really cloudy at the moment because I just did a water change, turned off the filters and they spat crap everywhere when I turned them back on. They overdue for a clean. Also my cellphone takes the worst videos ever. Quote Link to comment Share on other sites More sharing options...
David R Posted July 27, 2013 Report Share Posted July 27, 2013 8000LPH is a heck of a lot of current, and I think you're right in presuming the manufacturers specs are over-exaggerated. The Laguna MaxFlo 11000 on my tank is pushing around 8-8500LPH at a conservative estimate, based on ~100cm head, less than ideal 40mm return plumbing, and a bit of a fudge factor (claimed 2504GPH @ 4' head, = 9479LPH). This is enough to have water cascading over the 50cm wide wiers in my sump in a big waterfall, is enough to max out a 50mm drain at full siphon, and enough that with the 40mm return plumbing before I added the spraybar with just a 45* elbow on the end of the return it would have been blowing over fish half way along the tank. I'm not sure how big the tank in the video is, but it doesn't look massive, I think if you had actual [not manufacturers claimed] 8000LPH it would be a whirlpool. Quote Link to comment Share on other sites More sharing options...
Ira Posted July 27, 2013 Report Share Posted July 27, 2013 8000LPH is a heck of a lot of current, and I think you're right in presuming the manufacturers specs are over-exaggerated. The Laguna MaxFlo 11000 on my tank is pushing around 8-8500LPH at a conservative estimate, based on ~100cm head, less than ideal 40mm return plumbing, and a bit of a fudge factor (claimed 2504GPH @ 4' head, = 9479LPH). This is enough to have water cascading over the 50cm wide wiers in my sump in a big waterfall, is enough to max out a 50mm drain at full siphon, and enough that with the 40mm return plumbing before I added the spraybar with just a 45* elbow on the end of the return it would have been blowing over fish half way along the tank. I'm not sure how big the tank in the video is, but it doesn't look massive, I think if you had actual [not manufacturers claimed] 8000LPH it would be a whirlpool. I don't know if it would be a whirlpool. 8000 LPH is roughly 20X turnover. If I could have the entire flow moving in one direction it would flow from one side of the tank in 3 minutes. So, an average of let's see .015 miles per hour. What a weak whirlpool... Quote Link to comment Share on other sites More sharing options...
livingart Posted July 27, 2013 Report Share Posted July 27, 2013 Have 15,000 + 12,000lph running in 750l and not whirlpool nice flow though Quote Link to comment Share on other sites More sharing options...
amtiskaw Posted July 27, 2013 Report Share Posted July 27, 2013 Spray bars at the ends of the tanks for the flow?? rather than on the back of the tank?? or would that create a washing machine type flow?? :iag: I had that until recently - a spray bar at each end. It ended up with dead spots in the weirdest places. I turned the less powerful bar so it faces the glass (couldn't be bothered moving it to the other end with the other one) pointing down a little, and now the circulation in the tank is way better. It goes along the top, down one end, back along the bottom and back up at the starting end. Much better :bounce: Quote Link to comment Share on other sites More sharing options...
livingart Posted July 27, 2013 Report Share Posted July 27, 2013 yes it is all about direction of flow and placement of rockwork etc. to minimise dead spots in tank Quote Link to comment Share on other sites More sharing options...
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