Hello all,
my skimmer is repaired now, so I am happy. I started to dose vodka, about 0.3ml divided to 2 parts, 0.15ml in the morning and the same evening. It is visible slightly extended polyps on acroporas.
In next months I plan to change external filtration(phosex and zeolite) with NP reducing BioPellets filter, which looks like better and much easier filtration.