In General. I realize that there are lots of products. Okay, how about like Iron, Calcium, things you may add on a weekly basis. My lfs is telling me that I could use the whole bottle and it wouldnt matter. Just looking for general info.
Thanks
Not true. Everyone tends to follow their own recipe for reef tanks. Goals I set which worked for me are as follows. Alk 2.8-3.5. Calcium 400-420 ppm for reef tank.
The simple water change using filtered water from RO or RO/DI properly mixed to manufacturers recomendations is a good start. That is usually 1.025 or 1.026 specific gravity.
When I started into hobby everyone told me watch your calcium. That is a broad statement. I used dry form Kent products for calcium. I used dry formed Kent buffer also. The dry form was easier on my pocket. You just mix with RO or RO/DI water and dose. The slower you dose something, the easier it is to recover from mistakes, on animals.
After you have learned to mixed saltwater, letting it mix with powerhead for bring the Ph up to same temperature and salinity as Aquarium. You can test your calcium, Alk, and Magnesium.
Here again goals I set for my self when dosing.
Calcium for corals 400-420 ppm
Alk 2.8-3.5
Magnesium should be 3 times calcium level.
For example Calcium level is 400 ppm, your Magnesium level should be 1200ppm.
If your magnesium is not balanced with calcium level, your calcium will fluctuate pretty fast.
calcium and Alk compete or balance each other out also. If you can not get them to balance out. Then you most likely have a low or high Magnesium level. If you ever have a issue the best recourse is a properly done water change.
Testing, may it be Alk, Cal, or Mag will not be accurate if you just dosed for about 4 hours usually. You want to make sure specific gravity is up to manufacturers recommendation (1.025 or 1.026 usually) or salt will not work as designed.
Here is a link from one of my favorite aquarist.
http://www.advancedaquarist.com/issues/nov2002/chem.htm
Keep asking questions, this is the place where people love to chime in.
There are a lot of good people in this hobby.
Good luck,
Ed