What size powerhead?

**Ocellaris** · 08-22-2008, 01:46 AM

I'm thinking about getting two of these powerheads for my 72. I don't have any yet and using my protein skimmer powerhead and my two magnums for circulations. So which size should I get if I'm going going to get two? I want to gave decent flow, I don't know if 850 will be too much or not.

Koralia 1 400 GPH 3.5 2 1/4" x 5”
Koralia 2 600 GPH 4.5 2 7/8" x 5 7/8"
Koralia 3 850 GPH 6.5 2 7/8" x 5 7/8"

**cocoa_pleco** · 08-22-2008, 01:58 AM

i would say a single K4 or a K3 and a K2. ive got a K3 on my 55g breeder and it gives perfect flow. ive got 2 K2's and a K1 on my standard 55g

**Ocellaris** · 08-22-2008, 02:13 AM

I thought about getting a nano also to get flow from the rear straight into the rock openings to the front and two of the bigger ones towards the top of each side coming down. Then when I get my overflowing going, get that pointed straight over the front of the rocks.

**cocoa_pleco** · 08-22-2008, 02:14 AM

good idea. ive got my K1 at the back too, and the K2's at the side.

**Ocellaris** · 08-22-2008, 02:21 AM

Okay, cool.

My sand is starting to turn brown. I did a 20% water change yesterday before I realized it was really starting to turn and today I noticed it, so I figured while I got the extra dough, better start getting equipment.

**cocoa_pleco** · 08-22-2008, 02:25 AM

brown is normal in a young tank, just the diatom algae stage. my 55g breeder is starting to get it

**Ocellaris** · 08-22-2008, 02:54 AM

That's what I've been reading......and ordered the 3 powerheads. One Nano and two 3's.

Also, is this normal? My blue legged hermit crabs and a snail completely ate all the algae off one of the rocks from the established tanks. The top of the skull is white.