I have been running Core7 for other methods since September. All has been well for the most part with the exception of bottle 1 overdosing mag for awhile which killed off some snails. My chaeto was growing like crazy in my trigger sump. I went with other methods because my fuge area wasn’t quite big enough for the regular Core7. Suddenly my chaeto is dying off. Part of it is mushy and just disintergrating. My nutrients did bottom out at 0 phosphates and 0 nitrates for a short while but now since the chaeto is dying off my nitrates have spiked to 25. All other parameters are within normal limits. Any ideas? The disintegrating chaeto is playing havoc on my skimmer pump and making a mess. I’d really like to get my nitrates back down too before it kills off my cuc.