happyguy1682 Posted March 31, 2011 Share Posted March 31, 2011 my new tank 4,2,2 bottom of my tank there's a gap for water flowing into the sump tank, but i wanted to put sand will the sand flow into the gap............ wat should i use to block pls help me ( Quote Link to comment Share on other sites More sharing options...
tofubox Posted March 31, 2011 Share Posted March 31, 2011 Hmmm, using underflow sump? Maybe u can silicon a short glass, the height of your intended sand level, about 1 inch away from the underflow to seperate the sand from the underflow area. Just my 2cent. Quote I Love Stagsss Link to comment Share on other sites More sharing options...
SRC Member tunicate Posted April 1, 2011 SRC Member Share Posted April 1, 2011 Tank with underflow is usually meant for bare bottom(BB) setup. There are 2 things you can do : (1)If you intent to have sand now but may decide to go BB in the future, you can cut small pieces of sponge to block the gap. (2)To permanently block the gap, you can use aquarium epoxy(used for joining LR together) to block the gap. It may be a little tricky to do this while your underflow is running. If you intend to temporarily shut down the return pump, pls. check 1st to make sure it will not cause a flood. Quote Link to comment Share on other sites More sharing options...
SRC Member iskay Posted April 1, 2011 SRC Member Share Posted April 1, 2011 Can also convert it into an overflow but adding a PVC pipe overflow. Quote "Be formless... shapeless, like water. If you put water into a cup, it becomes the cup. You put water into a bottle; it becomes the bottle. You put it into a teapot; it becomes the teapot. Water can flow, or it can crash. Be water, my friend..." - Lei Siu Lung (Bruce Lee) Link to comment Share on other sites More sharing options...
happyguy1682 Posted April 1, 2011 Author Share Posted April 1, 2011 From the top is overflow.... But bottom oso got 1 gap for the water flow up then down to the sump Quote Link to comment Share on other sites More sharing options...
SRC Member tunicate Posted April 1, 2011 SRC Member Share Posted April 1, 2011 Yes, I understand. My tank also has both over & underflow. Once you plug the gap below, the water will go via overflow into your sump. Quote Link to comment Share on other sites More sharing options...
SRC Member iskay Posted April 2, 2011 SRC Member Share Posted April 2, 2011 If you convert to overflow, your flow rate will be less affected. Sent from my Milestone using Tapatalk Quote "Be formless... shapeless, like water. If you put water into a cup, it becomes the cup. You put water into a bottle; it becomes the bottle. You put it into a teapot; it becomes the teapot. Water can flow, or it can crash. Be water, my friend..." - Lei Siu Lung (Bruce Lee) Link to comment Share on other sites More sharing options...
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