I'm so torn on whether to spend $90 on a Jebao 3.4 or DP-4 Wifi doser, $180 on a coral box Wifi doser or $380 on a Kamoer F4 WiFi doser. I want to use one of the pumps as an ATO. I have a 15 gallon reef so I'm looking at about 500ml a day that I top off. There's so many mixed reviews with these dosers; unreliable, air in the lines, in accurate, pumps die out... Would I be better off buying a cheaper one and a Reef Breeder or Tunze ATO? Idk... Too many darn choices!