#whatisthis

This flatworm looking creature came off my lettuce nudibranch. I purchases this nudibranch about a month ago not really any problems with it until now. When I was checking the tank a lunch it looked as if it had laid eggs. About 3 hours later this thing has been moving around the tank. The...

Hello, we've had this torch for about 6 or 7 months now... It's been lumpy and bumpy since we've had it. Has anyone else had this problem? What might it be? Thank you! Calcium 520, Alkalinity 180, pH 8, phosphate .25, nitrate 20. Haven't gotten around to getting a magnesium test, but we are...