Dosing Regimen / Zeovit Filter

[G.Alexander]

Can you please share the complete last ICP report ?

As you use additional "components" to reduce PO4, where there any quick changes of PO4 while adding fresh absorber or lanthan ?

I still do not understand why you loose corals, can you please describe the process a little bit more like where the TN does start and post some acutal pictures showing corals habing issues and some corals which are doing fine ?

G.Alexander

[Superlightman]

Hello,
yes i add sometime lanthan or phosphate absorber to control the phosphate level as the zeovit method is not enough for now.

[Superlightman]

here is an example how it starts, brown out then stn. One of my big wonderful colony before and after ( and now fully death :-( )

[jacky]

Some of my thoughts, but I can't say I'm right. The appearance of the corals, especially the green corals, they seem to be particularly dazzling, and the ICP test results, the Fe element, seems to be abnormally high, and some metal elements also seem to be abnormally high. Also check for magnet brushes on the glass, and any equipment for rust. Doing a few larger water changes impromptu to refresh the elements in a balanced way is also something I would do.

The problem of high nutrient salts and metal elements may also come from the rock material you use. Is the rock a liverock? What is the brand of sand?

[G.Alexander]

Thank you for the additional details. I can not see anything unusual with the ICP test result except the elevated Ba and Mn levels which I would expect do not cause any issues.

As TN always starts at the base I was thinking about tissue eating turbellaria as you have also described that corals get brown before the TN starts. Have you already checked if the affected colonies are infected with turbellaria (flatworms) ? You need to inspect them very closely or dip the corals to see if something comes off or if there are any eggs.

In the pictures it also looks like that the corals do not have a slime coat as the tissue looks dry in the pictures ?

It would also be interesting to know if other corals like Montipora are doing well. From the pictures growth seems to be very slow or not present also, is that the case with all kind of corals ?

Are you able at the moment to keep the PO4 level constant or are there higher swings?

G.Alexander

[Bugger]

Often when po4 fluctuates in a aquarium stn rtn is often a result. You said you used phosphate absorber or some other chemical I'm not really sure.
Zeovit does not recommend its use but if you are going to use ferric oxide use only a minimal amount on a trickle flow other wise corals will react badly

[Superlightman]

Some of my thoughts, but I can't say I'm right. The appearance of the corals, especially the green corals, they seem to be particularly dazzling, and the ICP test results, the Fe element, seems to be abnormally high, and some metal elements also seem to be abnormally high. Also check for magnet brushes on the glass, and any equipment for rust. Doing a few larger water changes impromptu to refresh the elements in a balanced way is also something I would do.

The problem of high nutrient salts and metal elements may also come from the rock material you use. Is the rock a liverock? What is the brand of sand?

This Iron levels are not a problem, it is in within the range

[Superlightman]

Thank you for the additional details. I can not see anything unusual with the ICP test result except the elevated Ba and Mn levels which I would expect do not cause any issues.

As TN always starts at the base I was thinking about tissue eating turbellaria as you have also described that corals get brown before the TN starts. Have you already checked if the affected colonies are infected with turbellaria (flatworms) ? You need to inspect them very closely or dip the corals to see if something comes off or if there are any eggs.

In the pictures it also looks like that the corals do not have a slime coat as the tissue looks dry in the pictures ?

It would also be interesting to know if other corals like Montipora are doing well. From the pictures growth seems to be very slow or not present also, is that the case with all kind of corals ?

Are you able at the moment to keep the PO4 level constant or are there higher swings?

G.Alexander

Your right actually the growth is really slow since I went zeovit.
I don't know about the flatworm, I not think so as I dose lanthan and flatworm stop and all started fast with the switch to zeovit. But I can not exclude it, I will keep an eye on this.
Yes Montipora are all fine.
PO4 can be keeped constant with lanthan but without it will raise.

[Superlightman]

Often when po4 fluctuates in a aquarium stn rtn is often a result. You said you used phosphate absorber or some other chemical I'm not really sure.
Zeovit does not recommend its use but if you are going to use ferric oxide use only a minimal amount on a trickle flow other wise corals will react badly

yes but without the level rise, it is because of this I use preferently lanthan as I can control the level better than with absorbers

[Bugger]

You said other corals are not exhibiting rtn which was the same case I had when adding po4 to my tank. Some corals died and others carried on but I did notice some death which makes me believe the spike caused the trauma.

Zeovit should reduce phosphate in all tanks that have not gone off the rails with a out of control fish population.

[G.Alexander]

Your right actually the growth is really slow since I went zeovit.
I don't know about the flatworm, I not think so as I dose lanthan and flatworm stop and all started fast with the switch to zeovit. But I can not exclude it, I will keep an eye on this.
Yes Montipora are all fine.
PO4 can be keeped constant with lanthan but without it will raise.

Not sure if you have to deal with the faltworms already but here are two links showing how they and their eggs look like:

https://reefbuilders.com/2017/01/09/...to-treat-them/
https://www.melevsreef.com/articles/...lat-worms-aefw

Even if you already dose Flatwormstop I would recommend you to rule them out as a part of the problem also.

G.Alexander

[Superlightman]

I never saw this kind of sign, and I have a wrasse. but I can't exclude it, i will check carefully. But even if I had I not think that suddenly they die so fast. Also it would not have touch lps and softies but just acros I saw also some kind of green alga on some than can kill them when start, but I think this came on weak corals already.