Upgrading From One External To Another..

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ParsonsD

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Apr 28, 2008
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Want to upgrade from one external to another, any help on how to do this guys? Obviously i wouldnt just take one out and put one in, due to losing beneficial bacteria.. Should i soak new external media in tank water, then swap? Should i run them both for sometime, then disconnect old one? I know if two filters run, then take one away, i will lose half my beneficial bacteria.. But will the beneficial bacteria multiply quick enough to cover the contents and size of my tank? Or will it break down, not multiply and i have to cycle again? What ya reckon?
 
hi, i done thais over xmas,ran one along side the other, a month i did it for then stoped the old filter all seemed fine but i got an armonia spike,i think if i was going to do it again i would let them run at least 6 weeks,and beore you start the new filter take some media out of the old filter and put it in the new one,you might have to cut it,but put it in there.hope its of some help,good luck,,kenny
 

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