test kits and additives

[col]

Any other test kits I should have other than: ammo, trites, trates, PO4, calcium, mag, pH, alk.
I have calcium, mag and kalk additives.
My tank is 18 months and has polyps, shrooms and xenia at this moment.
How important are other kits and additives (essential or desirable?)
Thanks

 

[robchuck]

Given your current list of additives, it looks like you have all the kits you will need for now. If you start adding additional supplements, be sure to purchase test kits to measure those supplements.