Powerheads

sgh360

Member
I'm planning to add Powerheads to a 75G community tank and was wondering what type of rating I should get and how many
 

Jaysee

Member
What kind of filtration do you have?
 
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sgh360

Member
Two drs foster smith HOB filters rate 350GPH each. My ultimate plan is to use sand and rock to be my natural filtration
 

Lexi03

Member
That is typically done for saltwater tanks, not sure how it would work for a freshwater tank...
 
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sgh360

Member
I'm pretty sure it's about the same, the denitrifying is going to build on the sand and rock instead of the filters. obviously I'm going to let the bacteria build before removing the filters
 

Lexi03

Member
I have seen people post recentlly about making dirt tanks that would work in a similar manner. Just rember that so long as the filters are on the tank, the bacteria will grow there, only a small amount will inhabit the surfaces in the tank. Also the live rock used for saltwater tanks isn't really rock I believe it is pieces of reefs.
 
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sgh360

Member
What make live rock alive is the organism living inside the rock, including bacteria. I use Utah rock works very well on my reef tank, never used any rock that comes from a reef.

I just hate the splashing sound hob makes and to make it stop I need to fill the tank to almost to the top, I never likee Canister filters.
 

Lexi03

Member
You may want to reseach the Walstad Method. My guess would be if you where trying to filter the tank like a salt water tank, you would probibly need to follow the same rules for lbs of rock and water movement.
 

Jaysee

Member
canisters are fantastic! Don't be afraid

I think the bioload is going to be a significant factor. Obviously this will be easier the lower the bioload. I noticed you didn't mention anything about plants. Plants are the freshwater equivalent to live rock, as far as I know. I don't think you are going to get the same results that you get with a saltwater tank, using the same method. They are not the same approach.
 

Aquarist

Member
Good morning,

I have moved your thread to the Freshwater Tank Equipment section of the forum.

Thanks!

Ken
 
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