I would definitely recommend Perfect Corals. Adding these trace elements to my tank was a must. I am so glad I found this company and trusted their products. I will continue to use these trace elements and other products from Perfect Corals.

I have tried alot of salts . This one is the best. Corals reacted within the next day. Mixes clean also.

Seems to be working great.

I started using this product in the last days of April, and since then all my corals have been growing noticeably and look so much healthier. I’m really happy with the results.

I prefer running a no-water-change system, but over time, the water can get a bit yellow when the skimmer can't pull everything out. Since I started running @perfectcoral Active Carbon, the tank has been crystal clear!
I run it passively in my sump for 10 days at the beginning of every month, and it makes a huge difference.

Great communication, fast shipping, will do icp test after first month.

I tried Perfect Corals Kalkwasser and have been pleased with the quality. It keeps my saturation levels high and is very clean. I plan to continue using it.

Great product seen improvements in 2 days with some of the coral. In my tank.
Easy to deal with easy to use.
We'll continue using in the future

Start low doses and daily until you reach your desired level

corals are loving theses Amino’s!

Im about 4 days into the solution and already notice a big difference!

Product is awesome, and the customer service is even better.

I've used several brands of GFO and this is the cleanest of all I've had experience with. This product also seems to last much longer than previous GFO brands that I've used before. It was also the best price available that I could find online.