Filtration media and nitrate production

[Waterdog]

Hey Guys, I have had my 47 set up for about a year now with about 15 inches of fish, live sand and about 20 lbs of live rock. (yeh I know I am still adding live rock as money permits). By what I usually read my nitrates are not too terrible but I would like to keep them below 10 PPM. Currently 40 PPM. I have a CPR bak pak hob skimmer and a aqua clear hob filter with the foam block, carbon, and bio max. Could I reduce some nitrates by changing to differnt media in this aqua clear? Or should I wait until I get more live rock? And by the way I change 20 gallons of my water once every four weeks.

[yote]

You'll have to be anal about cleaning those sponges and filter media.But you can drop the nitrates.
I rinse and change my mechanical media every day.I've got 7 or 8 pieces,so I just take whats in there out,put a dry piece in,rinse the dirty one and let dry,repeat.

[Bifferwine]

Using filter media like that seems to raise nitrates in people's tanks by 10 to 20, on average. Everything should be rinsed out at least once a week.

I suggest not using any of it, actually. Get yourself a decent protein skimmer instead, and there will be no need for any type of mechanical filtration, except to occasionally polish the water or run carbon or phosphate media.

[runningrandy04]

Biff, does it really raise it 10-20? I have a whisper 20 and I'm at 0 nitrates. I only change it every 2 weeks with one rinsing in the middle. I do have a lot of rock though and a remora protein skimmer. Waterdog, other than getting a good protein skimmer or more rock, rinsing the filter every day like yote is. That would be the only way to really reduce nitrates. You would be physically removing the nutrients like a protein skimmer.

[Waterdog]

Thanks guys, I have extra sponges I think I will start rinseing and exchanging it everyday, I was always afraid of loosing too much bacteria. I have a CPR bak pak skimmer that I am very pleased with and alway collects quite a bit of skimmate. Is this not an adequate skimmer?? Thanks again you guys rock!

[runningrandy04]

[quote=Waterdog;166512] Is this not an adequate skimmer?? /quote]
It all depends on how low you want your nitrates. As the dissolved organics (cause of nitrates) decrease, the ability to skim them out becomes more difficult. With your skimmer, I don't think it could skim much more than it already is without some mods. Considering you only have .5 lb/gal of rock, check you NH3/NH4 and NO2 every few days to make sure that taking away the filter bacteria doesn't reduce your tanks ability to handle the bio-load

[Bifferwine]

[quote=runningrandy04;166506]Biff, does it really raise it 10-20?QUOTE]

Not for everyone. Some people run that sort of filtration and never have any problems (Yote), but it seems when people are having nitrate problems and they remove the canister fiter or HOB filter, that alone drops the nitrates by 10 to 20. I used to have a canister filter, and my nitrates dropped by 10 when I stopped using it. I've noticed that trend with others that post about their problems too. But if it's not giving you problems, I would say not to worry about it. Every tank is different after all.

[bullitt21]

what about running a cannister filter with phos pads and carbon.will this raise nitrates to?

[daugherty]

Originally Posted by bullitt21

what about running a cannister filter with phos pads and carbon.will this raise nitrates to?

dont use the phos pads get some good GFO and but it in a media bag and use it that way. do the same with carbon.

GFO
http://www.bulkreefsupply.com/Carbon...9_8/index.html

carbon
http://www.bulkreefsupply.com/Carbon...9_6/index.html

[bullitt21]

ok thanks i just ordered some.