Originally Posted by CottonDandyBubbleFun
Can I do 4-6 inches of live sand with live rocks?
The guy at the pet store told me I could use a saltwater
filter I would just have to change it more often
because the food/poop is it possible to use 2 really good
saltwater filters and with regular water changes maintain
a healthy tank?
what is a saltwater filter? i think ( and i could be totally wrong ) your talking about a canister filter? a canister filter is not a saltwater filter. the only saltwater filter they make is a protein skimmer. a skimmer doesnt catch debris like other methods of filtration do though, making it the ideal "saltwater filter"
a normal filter, whether it is a hang on the back of the tank kind, canister kind that goes under the stand, or even a sump full of bioballs is not the way to go when setting up a saltwater tank. if this were a freshwater tank, then yes any of the 3 mentioned filters would be great.
a skimmer on the other hand does not directly catch poop into a mesh like surface, which does not give it the chance to break down and polute your tank water. it basically gives the water a nice whip and allows it to foam up into a collection cup.. the foam contains the poop and un-eaten food which is extracted from the water. (opposed to the freshwater method that allows this to sit in the tank water and have a chance to turn into excess nutrients.)
you can, use a "freshwater" filter but it will require cleaning every other day or so to not notice a NEGATIVE impact on your tank. i personally would only use a canister filter completely empty ( just for water movement, but thats what powerheads are for ) or to only run some carbon in ( but thats what media reactors are for ) so honestly you do not need this piece of equipment.
if this is infact going to be a 2 clownfish only tank, i think you would be fine without a filter, or skimmer for that matter. i personally would run the skimmer in an oversized sump because i like water volume, but thats just me. if you pre-mix your saltwater 24 hours in advance and stay ontop of water changes, that will be enough filtration. ( granted your tank went through its diatom bloom with enough pourus live rock and sand already ) and theres plenty of flow.
i was trying to find an article ( i believe by pasfur ) on fresh vs salt filtration and couldnt. if i come across it i will share it with you. i did happen to find this, which touches on some issues of saltwater filtering.http://www.tropicalfishkeeping.com/s...ncy-bio-47415/