Hey
@wito-zn , I use the Coral Pro and very happy with it.
Some advice i picked up from the agents from Red Sea, was when ordering the buckets,
Dry mix your salt (once for new buckets), by rolling the bucket on the floor for a few minutes, or pouring the dry salt from one bucket to another a few times. It will prevent stratification of the salt- sometimes when a bucket of salt travels a lot, the shaking and vibrating causes the mix to separate according to grain size.
Always add salt to water, Never water to salt.
Mix at ambient temperature, and then bring the temp. up, if needed. Do not mix pre warmed water. Use a strong pump to mix the salt that won’t allow the salt to accumulate at the bottom, and keep it suspended. Don’t dump the salt, sprinkle it around so it won’t sink to the bottom in a pile.
There are other brands great out there as well. My advice would be to choose a brand and stick to it.