my design of sand bed.

i_limantara

AC Members
Feb 28, 2007
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Indonesia
ok here... the sand around 4 inches

so... i need you guys opinion about this design...

try1.JPG
 
it's a sand bed here.... i give it's a very slow flow of water ... tat's why it's have a pvc pipe inside the sand with a small hole...
i have try a very slow water flow with a bubbles and it's work... i hope it's can help me too

so.... the object is increase functionality of anaerob doing his job

by the way... i want to change the sand of my tank.... is it safe?
 
so... in plenum didn't requirement any water flow???

i see some of the picture underground filter, and it's have flow...

now my opinion is got a flow but... very slow flow... as long as i don't have any life sand here....

so how do you mean by this one (10 ml for 2-5 seconds) maybe 1 liters around 1-2 hours

UGF1.jpg
 
just place for anaerob bactery life..... so i need ask much about this....

nb : i can't get life sand around indonesia here
 
you you really want a reverse flow .. kind of like a fluidized bed filter......

i really think if you have a powerhead sucking water through the sand bed rather than blowing then you will cause a nitrate trap and drown out the sand...

I agree, reverse flow would be much better. You need the water to gently move under the sand and back up through it. Also, don't be concerned about not getting live sand, if you can get live rock, then the sand will become live by it's self over time. In this way the critters are doing all your work for you. Also, remember for a DSB to be effective, it needs to be exactly that DEEP so that NO oxygen can reach the bottom. I am concerned that even very slow flow will prevent any type of anaerobic bacteria from living.
 
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