Banned

iTrader: (1)

I changed my phosban yesterday but I added more than usual. Today some of my sps are bleaching on the bottom. Do you think the extra phosban can be the problem?

I don't know my parameters.

psychographic

iTrader: (2)

Not that I know anything about SPS, but I would say yes.

The last time I changed the GFO in my reactor, even though I rinsed it and ran it through a sock for the first few minutes ,I had problems. The day after, one of my Yuma's and my Blue Xenia were VERY stressed, to the point, I thought I was going to lose them. I'm guessing new GFO is extemely efficient at pulling out Po4. Reducing your Po4 levels too quickly can stress some corals.

SulfurAcid

iTrader: (0)

so do wht everyone should do when replacing their bio-balls with LR. DO IT SLOWLY. i say change a teaspoonful every other day till it is all replaced.

just my opinion

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psychographic

iTrader: (2)

How would you know what is the new GFO and what is old GFO if you did it 1 teaspoon at a time?

Banned

iTrader: (1)

Thanks. I'll take it offline for a couple of days and see how it goes.

Deepwater

iTrader: (7)

did you check you po4 levels before and after , you may have striped the tank of po4 too fast

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SulfurAcid

iTrader: (0)

you are right psychographic, but the phosban i use changes color when it is depleted. i guess it would be hard to do, but what one could do instead is just change a teaspoon every two weeks. JMO

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Cloud1921

iTrader: (0)

I agree

The phosban might be the cause.
Theres a good chance that the PO4 were stripped too fast.
From my experience, burnt tips were the usual indicator for excess phosban.

If I remember correctly, many of these PO4 media can also effect your alkalinity, which may be the underlying cause.

On the safe side, I tend to use less than the recommended amount and replace monthly.

psychographic

iTrader: (2)

I think my problem is I ran out of GFO and waited to long to change it. I normally change it once a month, that time I went 2 months.

It would only make sense if you change the media before it is depleted, it won't be as much of a sudden reduction in Po4.

So I guess the moral of the story is, "It's better to change too soon, than too late."

gsago1979

iTrader: (0)

With Phosban/Phosguard you can tell the media needs to be replaced when it begins to change from white to yellowish brown...as soon as you see the color begin to change, immediately change out your phosban/phosguard. In most cases it is recommended to run 2 cups of media in a Two little Fishies reactor...I tend to run close to that if not a little less and I change out my media monthly...I have never seemed to have any issues when changing my media. The other thing that is recommended when you change out your media is to first rinse out the new media with RO water in a cup let it crackle and heat up then drain do this 3-4 times before adding it into the reactor. Then run atleast 1-2 gallons of your tank water through the unit into a collection pail prior to letting the filtered water run back into your tank, this will remove all excess powdering and burn off that could be still stuck in the unit from the new media. Remember to have 1-2 gallons of newly mixed saltwater on hand to top off what you will remove from your tank during this process.

I have folllowed this procedure since I first started using a reactor for almost a year now with never seeing any coral burning after changing my media...This works for me and is how I would recommend doing a change.

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Greg Sago - Kansas City Reefer
Tank List:
75 Gal Reef Ready w/ 55 Gal Sump, 20 Gal frag tank and 20L Gal Refugium
42 Gal Hexagon w/20 Gal Sump

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