Although I was corrected when I said that the flow / dose is much lower for parasite control and would not work for algae control. The member pointed out that it would . That said I agree BUT algae control would then take more passes through the UV. Therefore I would run with three separate lines and only use them as required . One Bypass for maintenance as uncommon sense pointed out . Although there is an obvious way around that by just shutting it down. Two parasite control three algae control . I drew up such a system, but now an considering a scrubber . so I can use the algae to feed my fish. The beauty of the aforementioned set up is that it can then be a set once and forget system . No constant fiddling with flow
