you have some pics of your tank jack? a link....

so if i do a 10 pervent water change every two weeks. will that be ok?

I put a couple new threads in the pictures forum recently.

Everyone does water changes differently, like; weekly, every two weeks, monthly, ect. Every tank is different, every hobbiest is different. You'll have to find out what works for you (time and effort wise) and what works for your tank (health of corals and fish) That's it.

Christy is right; do larger and more frequent water changes now, to get your tanks corals back healthy, and after that - figure out what water change schedule works for you.

there are additives like iodide calcium amino acids. marine reef essentials.

do i need any of these. and do i need to add any of these?

Usually when you do a water change those minerals are replaced when you add the salt. Only when your tank is stocked full of corals etc will you need to add anything depending on your readings. For now, just keep with regular water changes.

You made sure to keep the new water mixing with a heater and powerheads in it for 24 hours so it would be oxygenated, thoroughly mixed and matched in temperature, right?
Thought I'd better ask...

PS - Whatever fish store you were going to - stop. Find a new one.

+1

perfect thanks. things look a bit better.

im going to mix some water tonight and do another water change.

i really do not like the look of the crushed coral being brown with algae. but it is probably dump to take it out now as i will mess up the system right?