Can phosphorus lead to increased metal staining

[smallpooldad]

Thank you for your reply.

I am not sure I understand the reply.

So far from other posts I am aware that phosphates are an additional food source for algae and that they normally only cause a problem if nitrates are present. Also that the potential for algae growth is there if insufficient chlorine is present. Phosphates therefore can further increase the likelihood of algae, as they are also a food source for them. So reducing phosphates can help, but I have no algae and no nitrates. I believe this is the case in the majority of pools except those close to sources of wind born nitrate fertilizers. So reducing them for this reason is typically a waste of money in my case.

The question is does it increase the potential for iron staining, if phosphates increase the oxidation of iron and other metals (maybe it does not)? Can this further increase the potential for staining, in that other forms of iron now becomes rust (ferric oxide).

Phosphorous I understand from your reply sequesters iron, which can drop out of solution, by doing so it appears that it might also create a problem via the afore-mentioned further oxidation, would it be better to use a non-phosphorous sequestering agent such as Metal free which is non-phosphorous as you mentioned in a previous post? Might you know what the active ingredients are and the percentages? From your previous post you stated that Metal free is not as effective so could, or should, one increase the dosage or, as is the case with polymers, this potentially be a bad idea?

I realize that this is a little pedantic and could be erroneous but it bears consideration?

Please excuse me if I did not make that clear.

On the lighter side I am considering purchasing a small jet engine to create giant bubbles in my pool to blow all the the iron out. Believe it or not this would actually work. But then again I might lose all the water or reduce the alkalinity to zero

Looking forward to all your replies.