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I just re-watched a presentation from Dr. Christoph Denk / Oceamo (in German), and he confirmed that they found rather high amounts of tin in some tubing products in their tests. They apparantly offer tests for tubing samples at relatively small amounts 12 USD, but I could not find this on...

Thanks so much for the insight. Do you know when the reef project is planned to be completed?

Great news.

Not sure if some dosing pumps cannot take an RODI line but mine can.

That worked. The ICP looks actually pretty good. Other than tin, your zinc is also slightly elevated. This is also another indicator that it might come from the food, i.e., brine shrimps in particular. Feeding 1/2 cube every few days into a smaller tank can be enough to increase these...

Yes, I think you should have this one: https://premiumaquatics.com/collections/quick-order/products/hanna-ultra-range-phosphate-checker?_pos=5&_sid=d793373f2&_ss=r&variant=47329528742130 it might not be the tubing then. But the brine shrimps are VERY LIKELY too. Can you post your full ICP...

I am one who is chasing numbers but based on the results you received from Triton, NO immediate action is needed. Copper - measured amount is actually desireable, but Triton likes to flag it as concerning. If it keeps rising above 5 ug/L, you could look into the source. Tin - measured amount...

Just FYI, while there are other more effective methods to remove tin than GFO, your levels do not (yet) need the brute force method by some of the other suggested ways which will strip out quite a lot of other stuff (potentially more than gfo would do). But again, I do not think you should use...

I agree that there is probably not a formula to get it 100% accurate. My thoughts were more around defining a baseline to determine if one is far off, i.e., significantly over or under that baseline, to put some light on this more nebulous topic of fish feeding. Being under the baseline seems...

How much was it dosing daily? I am surprised it died already.

Welcome Anand. What made you pause reefing three years ago? Second Max’s tank journal suggestion.

Interesting point. But I have to admit that referring to spawning clowns in a 400 gallon tank overflow not necessarily being a sign of happiness seems harder for me to relate to :). Also, if this is not a sign of optimal fish health, curious what is? Lastly, just wanted to emphasize that I am...

I am really curious who you see not feeding enough. I feel it’s mostly the opposite. The variety piece is interesting. Paul Baldessano who is as passionate about fish as you are thinks a fish can live very happy and healthy on the same food for decades, demonstrated through regular spawning...

I tend to agree in general. Although I do not know if a fish can actually overeat. I lean towards a maybe. My father in law has a trout farm, and there are concerns with fish eating too much, but need to check. I think it is more a waste, vs negative impact to the fish, which makes me believe...

I disagree, but I think that's the reason why feed how we feed, mostly too much, sometimes maybe not enough.

I am not a fan feeding through the sump, but some do it. I do not remember what the argument in favor of it was. Something to do with how to position the auto feeder I believe.

It is my understanding that this is the approach from professional fish farms translated to our hobby and I assume fish farms want their fish well fed and healthy too. I am not sure if it is impractical really. Seems rather easy to weigh food. The auto feeder can be calibrated once to...

I am claiming 2-3%, but I can see that triggers and fox face might go higher than that. But this is the heart of my question.

Like I said, I would suggest to not address this through GFO but water changes and new tubing. A lot of folks had that tubing issue, first identified by OCEAMO at the time. Also, gfo becomes ineffective pretty quickly, a week or so.

Just to confirm - no fish eats its own weight on a daily basis, or to limit this statement, none of the ones we keep in our little tanks :). Far, far from it, but maybe that is why we are tending to feed a lot. How much coral eat or need to be fed is a whole different topic, and requires very...