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I would not add sand. If you are worried about detritus build up, cleaning sand is a pain. Bare bottom, you just use a shop vac and boom tank is clean in about 5 mins.
I will usually let excess food sit a day or so in the fridge. If you want to really do something cool, defrost the cubes and toss what the "correct" amount of a feeding is into an ice tray with some RODI water and freeze that. Then you have your own feeding portions ready to go.
Yeah, I was just texting darren about that. Basically the story behind it goes a little something like this: Steve from Ultra Corals a sponsor on here posted about a sick rainbow chalice he got in and wanted to move. I called Steve and got a price and Darren and I went halves on it. I named...
The two downsides to DC pumps at the moment are not a lot of head pressure and non standard plumbing. Obviously the plumbing part is very easy to overcome, just can be a touch annoying. I think if you are sump in stand, the DC makes sense, but if you are in a basement (like me) the head loss...
I have never heard the clam part, though just about any fish will nip at a clam given the right conditions. Wrasses in that genus can go after CUC but their mouths are pretty small so they are not going to devastate a CUC, depending on whay you have. Same with cleaner shrimp, I think a well...
I have never done it, but you are essentially injecting kalk paste into the pest. Yes is can be done underwater. I know others have even had success with injecting boiling water.