Based on Ducati's reply in another thread, I would take what he has to say witha grain of salt.
Posted by Ducati,
" would look at your energy bill to see if its worth it...I think the AC110 are about 6 watts (hardly a big consumer) but the air pumps and power heads....
You only really need 1 AC110 (or AC500 renamed) for a 90. I used to use two for a 180 which was more than enough.....and it was full of big fish
Who wants to maintain more filters than whats really needed? I know dont
Duc
AC are great filters, and very cost effective and last forever"
Cheers
Posted by Ducati,
" would look at your energy bill to see if its worth it...I think the AC110 are about 6 watts (hardly a big consumer) but the air pumps and power heads....
You only really need 1 AC110 (or AC500 renamed) for a 90. I used to use two for a 180 which was more than enough.....and it was full of big fish
Who wants to maintain more filters than whats really needed? I know dont
Duc
AC are great filters, and very cost effective and last forever"
Cheers