love my rlss 6i and its waveline 3000 pump...
just ordered a speedwave 2640 for 210$ for my return !!
O ring and thread are not an issue for me since I run it in the sump with barb hosing...
also anybody tried to retrofit one of these pumps to a reef octopus with the noisy psk-1000 sicce pumps ? (I have a RO xs200)...
that would be great...
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