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Old August 15th, 2008  
ER9
Fish Helper
 
do you think filters should filter from the top or bottom of the water column?

my hang on back filter has a tube that reaches down about 6 inches into the tank but has an extension that i could use to suck in water from closer to the bottom of the tank. curious what opinions any of you have as to wether theres any benefit to either?
ER9 is offline  
Old August 15th, 2008  
Moderator
 
Further down is better in most cases, as the water is feeding in from the top. If you filtered from closer to the top, you'll be getting a lot of freshly filtered water getting sucked back into the filter.
sirdarksol is online now  
Old August 15th, 2008  
Fish Bum
 
I agree with sirdarksol that the further down the better also someone can correct me if I am wrong that most of the waste and uneaten food would be on or near the bottom of the tank and thats what you want out of the tank anyway.
J J Indy is offline  
Old August 15th, 2008  
Fish Keeper
 
Im also in agreement. further separation of the intake and outlet forces greater circulation which makes the filter more efficient.
Tavel is offline  
Old August 15th, 2008  
Fish Keeper
 
Agree with everyone above!! You get better water circulation the closer to the bottom the intake is. Also, as JJ mentioned all the waste that you want rid of tends to settle in the bottom of the tank!
Devon is offline  
Old August 15th, 2008  
Fish Keeper
 
If you want both you could use a surface skimmer attachment that fits most HOB filters, it still filters from the bottom but also allows surface water to "drain" down into the top of the skimmer to get rid of floating waste
clinton1621 is offline  
Old August 15th, 2008  
Fish Keeper
 
What they said ^.
Fishies-for-me is offline  
Old August 15th, 2008  
ER9
Fish Helper
 
very good. thanks for all the replies. will definatelly add the extension. will also look into that surface skimer....sounds like i could benefit from that as my new ank doesn't have much water movement. lots of floating plant debris sometimes after prunning.
ER9 is offline  
Old August 15th, 2008  
Master Of Fish Poo!
 
I'd agree with SDS and add that extension to the filter tube.
COBettaCouple is offline  
Old August 15th, 2008  
Moderator
 
Yep all good advice My intakes are right at the substrate line and the water flows across the top of the water column. If they(uptake and outflow) are too close your getting recirculation of the same water and not much filteration. Good question!
Carol
Butterfly is offline  
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