Tank Entry

So I did my first water change in over 3.5 months yesterday. recently had my wedding and was just to busy to do the proper work on my tank. when I checked the parameters before The water change they were as follows

Nitrate - 0
Phosphate - 0
Calcium - 420

how often does everyone else do water changes? my tank is a 60gallon ad has been running for 4 years.

So this is the idea i had for my sump I was thinking for the refugium i would use half with a 5inchsand bed and the other half just 1 inch.
the baffles after the skimmer i was planning for over under over.
Ill have the return pump and the heaters in the return zone which also will hold the bio reactor.

If anyone has any ideas or improvments i would be very thankful

Over the last two weks I added my fist two corals to my tank both are looking great

Hello everyone this seems to be an awsome site. Im from Canada and we dont really have much in terms of saltwater fish / reef tank option other than a store called bigals.

Well anyway I started up a 60 gallon tank about 6 months ago and it seems to be doing ok but i got alot of this brown hairy alge growing on my rooks and overflow any idea of how to get rid of it?

Currently i have 3 astres snails and 10 blue leg hermitcrab as a clean up crew i guess is this good for ...