I always do, yes.

For sure, you want to do the water change. Don't risk your tank inhabitants by leaving it in there.

So if there is still cyano 24 hours after the water change should I dose again?

After 24 hrs about half my cyano was gone. All after the 48.

Skimmer still going nuts after a 20% water change. Putting some fresh carbon in now and hopefully skimming normally by tomorrow.

Really impressed by how well this stuff worked. My corals showed no signs of stress. I did notice some of my sponges look a little deflated tho.

Yah I was being impatient when I posted this. at the 48 hour mark when it was time to do the water change and turn the skimmer back on I siphoned out all the cyano I could reach, but I didn't get all of it. My skimmer went nuts for about a day, and at 48 hours the last remnants of cyano that I couldn't siphon off vanished.

am i supposed to see the dead cyano anywhere? mine just disappeared lol.

I did a 20g change last night but I still can't put the lid on my skimmer cup. Doing another 20g tonight.

For me two 20% water changes two days in a row (on a weekend) and a third one the following weekend plus copious amounts of carbon replaced every other day is what it took me to get my skimmer happy again :lol: Chemiclean rocks but that stuff really lingers. It doesn't seem to bother anyone in the tank though.

the Stuff that I had siphoned off was detaching from the glass and sand in one giant sheet, so if that had launched in to the water I'm sure I would have seen it, it was a continuous sheet about 10 inches long and 6 inches wide. The remnants that were left on the glass were just tiny patches, and they were right under a vortech, so one moment it was there, then the next time I looked they weren't

if anything it's probably suppressing a new outbreak of cyano i guess lol.

a chemiclean treatment every few months if needed won't be the end of the world i'm thinking. the tank gets some serious water change love as a result. tank looks happier than it's looked since setup as far as my sticks go.

+1 I have a drain to the sewer right next to my skimmer so I just let it overflow and drain until the skimmer removed enough of it that I could stop it from overflowing at the lowest setting. In effect using my skimmer to do a small water change.