I need help sorting my tank out! :(

[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.

[banditpowdercoat]

I run 13 hrs on actinic, 11 on the Mid day. Was just 10 hrs on MH, no probs here.