Hi Thanks, I know about it, but count prices... D5 NEXT pump solo 116 EUR, Aqualis from 100mm smalest type for 40EUR, to 880ml type for 55EUR, adapter from 35 to 70EUR by type, and ring for 13EUR = 204EUR for cheapest set with 100mm reservoir, and 254EUR for 880ml set with fill sensor. Ultitube D5 100 PRO set cost 185EUR, and Ultitube D5 200 PRO 195EUR. So where is some benefit to buy Aqualis tank, D5 pump,adapter and ring separatelly... And of course there is not anything about my first, and mu...

Hello I am new here, and register just to share this idea. D5 NEXT is probably the best pump on market. Just one little thing (in addition to the price) can make it better. There is a very nice and sophisticated High Flow NEXT sensor, with close to the same functions (except for pumping of course), BUT it has one more important function moreover, which is the electrical conductivity sensor. And AFAIK the D5 NEXT hasn't this function at all. Except for this, there are the same monitoring function...