Adding Supplements to tank

[Texas Rick]

Morning, I have a question for all of ya aquarium. How many are using this product or a similar product for there coral to supplement them and get the best out of them. I am currently not using anything for them. Just regular water changes. I found this interesting and just wanted to know your opinion before I use them.

 

[Webslinger]

i just do 10% weekly water changes gives the tank all it needs with a little help of Kalk in the ATO. KISS