[ddangovian]

I set up a 40 gal reef with 6 domino damsels and 2 clows. The Dominos have all died except for one, they loose there color and then just die, swimming and good appetite till the end. My clowns on the other hand are alive and well. I change 25% of the water with the premixed stuff, with no luck.
Does anyone have any idea of what is going in.
David

[jimw369]

Originally Posted by ddangovian

I set up a 40 gal reef with 6 domino damsels and 2 clows. The Dominos have all died except for one, they loose there color and then just die, swimming and good appetite till the end. My clowns on the other hand are alive and well. I change 25% of the water with the premixed stuff, with no luck.
Does anyone have any idea of what is going in.
David

Sorry to hear that David. Could you please post your water params and tank setup/equipment

[pyromaniac398]

Like jim said we need water params and what you have. How long has the tank been set up?

[demonsquirt]

How old is this tank?
Whats used for water movement?

This is to many damsels for a 40 gallon. In most cases only the strongest will survive. Besides why would you want to max out your tank with damsels. Your limited in your stock so pick cautiously.

[ddangovian]

The tank is 6 months old, and the damsels were in there to cycle the water. After the live rock was in I could not get them all so I gave up and just left them in. I have a filter and a protein skimmer for water movement. I am happy that the damsels are gone now, I really enjoy watching the crabs and shrimps any ways.
David

[ddangovian]

My spacific gravity is 1020, PH is 8.3, and Nitrate's and amonia are undetectable. The Temp is 75 to 78 degrees.
I always use premixed watwe, becase I live in a condo, and really don't have the room to make water as I would like.

[demonsquirt]

You need powerheads for proper water flow.A skimmer and some filter just will not do it.

Firstly, water movement will overcome the problem of thermal layering by mixing the warm and cold water layers, so we end up with an evenly heated tank.

The movement of water in the tank also prevents the formation of a film on the water surface, which would inhibit gaseous exchange between the water and the air.

Water moving around the tank effectively increases the surface area of the tank by constantly changing the layer of water in contact with the atmosphere. This, of course, dramatically increases the rate at which oxygen can be dissolved into the water and carbon dioxide released into the air. Well oxygenated water is essential for the health of the fishes, plus, we can keep more fishes in a given space if the water is well oxygenated.

Moving water carries oxygen to the nitrifying bacteria in the tank, which are responsible for the breakdown of harmful waste products, and also carries nutrients to the plants.

A strong movement of water in the aquarium, as produced by a power filter, provides the fishes with a current in which to swim, and many fishes find this both enjoyable and beneficial.

As you can see then, water movement in the aquarium can be tailored to suit the type of environment we wish to establish.