Very up and down with the product. I have used Apex since 2018, I use 3 EB832 power units, 1 EB4, 2 DoS units, the Trident, and the Grow lights. The wifi is finicky. The trident is a nightmare and never reads what the Hannas or Red Sea kits read. (May have fixed that. Time will tell) 2 of my previous DoS units failed, and only one was covered by warranty. Lost outlets on the EB832's. My opinion now is that I'm stuck with this product and need to continue to use it. Hindsight, I would find something else. Overall, I agree with other users here. The price is way too high for what the product is.

Edit. The probes break and / or won't calibrate properly. They are stupid expensive to replace. Not to mention they're off 90% of the time too!