what koralis powerheads to get - Page 2

nubomb · #26 12/27/2007, 10:27 AM

My tank is glass. I'll have to give these a try and pull out my MJ1200s. HAs anyoen compared these to a moded MJ?

capn_hylinur · #27 12/27/2007, 11:18 AM

Quote:

Originally posted by nubomb
How well do these Koralia's stick to the glass and are they fairly silent? One of my biggest headaches in my tank is vibration noise and having to mod power heads with mag floats.

they have a magnet and two suction cups---rather then just two suction cups--they don't move. The are silent--no vibration--almost a 360 redirect.

http://www.aquaticodyssey.com/pumps/koralia.htm

bkoz · #28 12/27/2007, 11:45 AM

I have two MJ's and two Koralias and the koralias are silent while I do get some vibration from the MJ's. The magnets on the Koralias are great, very powerfull.

gary faulkner · #29 12/27/2007, 07:26 PM

Quote:

Originally posted by thegheco
HI Gary, well, my tank is close to 4 years old now but I have southdown sand on the bottom.
And I have a fish that burrys in it at night to sleep. He also nose dives into it when frightened and digs in it during the day.
So some days it keeps the tank stirred up.
So it is very loose with no chance of critters growing in it because of the turn over by this crazy fish.

Let's see, flow or sand diving fish, flow or sand diving fish, flow or.....

capn_hylinur · #30 12/28/2007, 12:12 PM

Quote:

Originally posted by gary faulkner
Let's see, flow or sand diving fish, flow or sand diving fish, flow or.....

flow--sanddiving fish---filter sock---flow sanddiving fish--filter sock
or...

cyano on the substrate will never be problem

lark · #31 12/28/2007, 12:32 PM

No vibration and magnet is plenty strong on my 1/2" acrylic.

gary faulkner · #32 12/28/2007, 05:39 PM

Quote:

Originally posted by capn_hylinur
flow--sanddiving fish---filter sock---flow sanddiving fish--filter sock
or...

cyano on the substrate will never be problem

If you were to empty the sand out of the sock and discard, you won't have to worry about going BB

Hey, this might be a new process.

How to go Bare Bottom semi automatically or some such thing.

cur10u5g30rg3 · #33 12/28/2007, 06:09 PM

I have a single 4 and a MJ 600 with mod. They are comparible in flow. I think the mj is a little stronger though. I like the magnet the koralia uses, but it is a bit loud when it starts.

capn_hylinur · #34 12/28/2007, 09:30 PM

Quote:

Originally posted by cur10u5g30rg3
I have a single 4 and a MJ 600 with mod. They are comparible in flow. I think the mj is a little stronger though. I like the magnet the koralia uses, but it is a bit loud when it starts.

Isn't the flow still more direct with the mj 600 mod?

did you buy the kit or diy?