Recommended Schedule to replace ROWAS and Activated carbon

[kraken]

Hi, as suggested by the thread title, what is the recommended length of time in which one should change out the rowas and activated carbon?

[Kakani]

Bro no schedule depend on your fish load and how much you feed. You need to gauge yourself. Normally ppl change 1 monthly and also depend how much rowa you put. As for carbon normally 1 monthly as carbon you put just in case of any spike of ammonia in tank. Change monthly also worry carbon will leech out although the instruction say they won't leachh out.

[Harlequinmania]

For Rowa phos, you can monitor and measure your p04 level before you decide to change it, whereas for carbon there isnt any test kit in the market which we can test it but generally if you are using it for medicine removal it should be change after a day or two.

If you use it to prevent and remove yellow tint in the water a good guide would be about one month.

[MarcoVan]

Like previous bros have suggested, recommendation from me is carbon to be changed once a month. I try to go by the guideline for carbon change at 1g of carbon per 1L of water.

You can try to begin with 0.5-0.8g per litre of water and slowly move up if necessary but do not exceed the guideline unless your tank has some serious issues. Aggressive carbon shocks corals with abrupt water clarity. This leads to bleaching and death.

GFO I go by feeling. There are no credible test kit in the market that measures phosphate. So I do keep a log of how much GFO is used per time and this is measured against how fast my algae ie. Hair algae and glass algae grow. If I notice I am getting to clean my glass more, time for GFO change.

I still measure my po4 levels for fun but nothing can beat yours and my eyes (:

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[kraken]

so assuming now I have very little rowas running in FR and my PO4 is not detectable by salifert test kit, I do not have to change out the rowas till the moment PO4 is detectable?

btw I do have a very healthy bunch of chaeto growing that needs at least bi-weekly harvesting. I am assuming that my chaeto is extremely hardworking by their growth.

[kraken]

seriously I have the carbon there for the sake of it, I dun see any difference without or without the carbon in my tank really.

[MarcoVan]

Last time I used my zoas as carbon indicator. When their stalks get long, time for carbon change. When carbon is sufficient/not exhausted, I find them matted to the rocks.

Maybe you can try something like that. Pick a coral and slowly observe it for a month after adding carbon. See if there is any changes.

If there isn't you might be using enough carbon or your skimmer is overdriving. Haha

Nice to know your chaeto is working. (:

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[MarcoVan]

seriously I have the carbon there for the sake of it, I dun see any difference without or without the carbon in my tank really.

Is your tank mixed reef? Carbon is necessary for mixed reef. Especially when you got precious softies and precioussss spses.

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[kraken]

Mine is a mixed reef