Filter Media. What Should I use?

[dlee]

I am a newbie.
I am 4 weeks into cycling a 90g FOWLR tank. (I am getting the acronyms!

). There is just curing live rock in the tank along with a skimmer, powerhead and canister filter.
I have a Rena Fillstar XP4 canister filter with just the media that came with it.
As far as chemical filtration, should I purchase and add any of the following:
- Nitra Zorb
- Phos Zorb
- Zeolite ammonia remover
- Bio Chem Zorb
All my levels are where you would expect them at this point in the rock curing (from what I read) ...ammonia peaked after a few days and is now <.25. Nitrates and Nitrites are both >1.
Should I just let my tank cycle without adding these chemical filters? Or should I add some?
What about after the tank cycles?
Also, on the Rena website, some of these filters just mention freshwater....are they all OK to use in saltwater tanks??
:thinking:

 

[earlybird]

You shouldn't need to use any chemical filters during the cycle process.
As for after you cycle it's personal preferance if you want to use carbon and such. I wouldn't use any ammonia remover as that's the purpose of you cycle to create nitrifying bacteria which thrives on ammonia. Your lr should be all that you really need along with frequent partial water changes.
IMO- it's best not to use anything that is for freshwater. Make sure that whatever you use is saltwater safe.