My H&S skimmer has stop skimming after i remove all the nitrate accumulating media like coral chip, bio ball, bio homme & even filter wool two day ago. i replace my filtration with purely 15 kg of cured LR in my sump and found my skimmer not skimming properly till
now. Does anyone know whats is happening? My tank is coming to 2 years with 45 kg of LR in main tank and about 15 kg in sump right now. Salinity is currently at 1.026. Currently my H&S is there just bubbling for the last 24hrs with no foam at all.
Please advise.