Two questions for the peanut gallery:
1. My powerheads/pumps are dying. Not the ones that run the system 24/7, thankfully, but the spare ones I've been using for maintenance. I had a MAG 15 that was three years old that died, and I replaced it with another of the same model. I used it once, for about 3 minutes, and then put it away. The next time I took it out, it was dead. No humming, nothing.
The same thing happened with a cheaper powerhead I bought. (Not sure what model.) It worked the first time, and I used it to blow off rocks for about 15 minutes. Now, same thing: it's dead. I took the shroud off and the impeller seems okay. Plugging it in produces nothing.
Are these things fused? Am I just getting unlucky?
2. I noticed some tiny white things growing on a few of my rocks today. Most are on the underside or in the shade. They do not blow off, which is how I found them in the first place -- I thought they were large sand grains at first! They look like little flower buds, almost, but closed up sorta. They're probably no more than 1 or 2mm long. I might have fifty or 60 on a rock in a couple places. Do I need to bust out the macro lens to get an ID, or does anyone know what these are already?
Thanks,
Ben