Okay, I'm kinda new at all of this stuff, but I've been looking into adding a sump for my system and I have a ton of questions (and I'm trying to do it inexpensively). First of all, do I have to pay my LFS
$225 for an acrylic sump that is predrilled or can I just buy a cheap glass 20 gal
aquarium and use that? Also, the sumps at the LFS
have a prefilter box that is HOB
for the main aquarium, so they say there's no pump necessary there because it siphons automatically into the sump. So if I go with a 20 gal
aquarium, I would need two pumps, right? One ouf of the main and one back to the main from the sump, right?
And lastly, do I need mud to grow macroalgae in my sump?
Okay, one more....do they make submersible pumps to go back and forth between the two if I decide to go that route? And, if so, what protects against disaster..i.e., one of the pumps going out and overfilling one of the tanks?
Sorry for all the questions, I just really need some answers.....Thanks!