I know sps required the addition of Calcium,Magnesium and Alk( thanks to ya) but do they required any other suplementation besides Cal/Mag and Alk ? Thanks please reply!
If you start with a good salt you may not need to supplement that much in the
beginning. Basically you will start up your tank, let it mature for a bit with a fish
or two, and then add a hardy frag. At this point there is nothing really using up
CA, MG, and Alk in a huge quantity.
If all goes well you will be adding more frags. Lets say a dozen or two depending
on the tank size. Even at this point your CA, MG, and ALK will not be falling too
dramatically over a few days time. You will be testing every week and doing water
changes to get an idea of what is going on though.
The problem eventually shows up when things start taking off in my opinion.
You can see new growth on a weekly basis and all those frags are getting bigger
and bigger. Then they start to suck CA and what not out of the water.
You should be noticing this though with weekly testing. One day your CA is at
440 and then next week you test at 420. Perhaps your water changes just
cannot keep up at that point and decide to supplement. Trying to keep your
PH at 8.3 and ALK at your desired level... etc....
So that is how I see it. A good reef salt will get you going but keep in mind that
down the road you will have to supplement where needed.
As for other supplements I use Seachem's "Fuel" for reefs since my tank is smaller
and it is still affordable at that point. I also use oyster eggs and rotifeast, which is
not a supplement in the sense you were talking about, to feed my corals. I like seachem's
reef buffer (ph), magnesium, reef builder (alk), and calcium. I like instant ocean regular
salt with tropic marin bio actif mixed in with it. I run activated carbon as well as gfo.
i want phosphate and nitrates to be undetectable with the better test kits, fyi.
sigh.. this hobby is crazy sometimes ;0) lots of reading to do just to get a good grasp
of the basics. i do not even use the fancier things out there.