I need help sorting my tank out! :(

[tlo]

well, to start
-get rid of the green brittle star - they can be fish eaters
-maroon clowns are usually very aggressive to other clowns and sometimes other fish - so keep an eye on it
- damsel fish again can be very territorial
-sailfin tang will rapidly get too big for a 90 gallon and should be re-homed
-sandsifting starfish eat the microfauna in your sandbed and can rapidly eat itself out of food. If your starfish is dropping legs or your hermits are eating it, it is in trouble and should be re-homed.
-crabs/hermits are opportuninstic feeders and although many are sold as reef safe, they can sometimes eat some desirable inhabitants if they can catch them.
HTH

[my2rotties]

My green brittle star ate my scooter blenny. I saw him reach out and grab the fish and there was nothing I could do. I just got rid of all my large red hermit crabs, since I found one of them eating the legs off of my sandsifting starfish. I have two black spined sea urchins and want them out... just don't know how to go about doing it at this point. Like Aquattro said they knock everything over. They also grow super big in no time at all.

I have been trying to remove the brittle star but he is under a rock at the bottom of my tank.

I also had a tomato clown with my maroon clown. Had to rehome the tomato since the maroon was trying to beat him to death.

[Marlin65]

I had a cowrie ones that loved to eat my star polyps at night.
I have a large brown brittle star with 10" arms and can see how they can eat fish, just feed it well. I also have a black spine urchin. Epoxy everything down and make sure everything is mounted and no problem mine does a great job on algae.

[Atmos]

alright i got a lot of good advice ill get rid of the brittle star, the cowries are sold and so are all the clownfish. and 3 of the hermit crabs so the next step is to sit back and let the sea urchins clean the algae.there is lots so i know they will grow big, after that ill get the small colorful ones. then ill sell the arrow crab by this time he should have eaten all or most of the bristle worms(i want them gone since an orange one ate a baby anemone)

[Leah]

Just a thought here you say you have a 800 watt metal haldide maybe that is adding
to the algae. I do not know much about MH maybe someone who does can chime in.
Does sound like you have a powerful light on it. How long does it stay on?

[Aquattro]

Originally Posted by Leah

Just a thought here you say you have a 800 watt metal haldide maybe that is adding
to the algae.

I have 800w, no algae.

[banditpowdercoat]

Wattage doesnt really affect the algae as much as color spectrum does. a 250W 5500K light will grow much more bad algae than a 20,000K 400W

[Atmos]

i keep the light on exactly 8hrs a day its on a timer, maybe its too much.