I should learn not to use numbers when making points... 5 gallons, 50 gallons, 500gallons. The point is that on a normally stocked tank, once you've got space for ENOUGH bio media (which usually isn't very much), adding more is useless.
Yeah, but again, that's not a wet/dry anymore, it's a refugium. you can use a refugium with a canister too, you just have to put it in a different place. I'll agree with your point here on some level, I use my one remaining sump as a fuge all the time... I'd still get rid of it in a blink if I had some money burning a hole in my pocket.
Dunno why this is a big thing... do you swap your media around a lot? I don't. Comes back I guess to what I said about if you like to mess with your filter set up a w/d is good. Although... personally I shut the pumps off whenever disturbing the media so all the crud doesn't get pumped into my tank.
Again, this is only an advantage if you want to mess with your filtration a lot. The way I run my tanks lately (since I lost interest in screwing around with my filters.) is to choose an option that works and then leave it alone. As long as there's one option available that will do a good job, what does it really matter how many different other options there are?
Refugium, not a w/d. Can have plants in a refugium above the tank, beside the tank, or in the tank with a canister. Again I suppose it's easier with a sump, but we're not really talking about a straight wet/dry anymore.
Cost is a big one, especially for a large tank. That's the reason I went wet dry sump in the beginning (and why one of my tanks still has a wet dry.) I wound up buying a canister anyway though, and I have two wet dry's I built for myself along with all their associated equipment sitting in my yard cultivating spiders.
so did I at first. I lost interest in the maintenance part of the system as soon as I stopped learning from it and it became a chore. :silly:
