Hmm. I have 2 K2s in my 40 breeder and I sometimes wish I had one K2 and one K3. BUT if you are in a position to get a MP20 go ahead and get it because you are going to want one! There is the middle option too. Two Tunze 6025 nanostreams would be about $140 for the pair. A lot more flow than the K's will give you (and a smaller pump) but not too much. You can also cut the inner deflector plate to increase the flow significantly.
http://www.marinedepot.com/ps_viewi..._campaign=mdcsegooglebase2&utm_content=TZ1211
The 50/50 will be fine. LR doesn't need any light to be live. Doubt you will see any coraline growth.
http://www.marinedepot.com/ps_viewi..._campaign=mdcsegooglebase2&utm_content=TZ1211
The 50/50 will be fine. LR doesn't need any light to be live. Doubt you will see any coraline growth.
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