Thanks for the info. Yes, its interesting.. I've been told by a LFS owner that once you go saltwater, its difficult to go back. I guess Im just one of those people who likes the best of both worlds. To me though, its like literally comparing apples and oranges.. both fruit, but very very different.
Yeah.. my main concern was the lighthing, because I am trying to not limit myself in terms of which plants I could keep-- allowing it to proliferate at a decent rate. The issue for me was cost, like many other people in this hobby. It was option 1) $20 to replace two new 13w CF bulbs, or Option 2) Getting a New CF Fixture 36w for about $100. (well at least thats the one they had at the LFS that was close to the wattage i was looking for originally. Its the JBJ Clip on one that was discontinued.) Im just trying to figure out a decent way of getting a 36w light over a 20" tank.. and not break the bank?
Oh.. and how important is the intensity.. for example.. say 1 x 36w light -going to 3.6 wpg, versus 2 X 18w lights which will also give you 3.6wpg, but i guess the intensity is still at 18w? Is that an accurate assessment? I read that online somewhere.. just a thought.
As for the biowheel on my peguin 170- I think i tossed that thing long ago. ahha It was too noisy for me when i use to have it in my bedroom... that and the wheel splashes water on the hood and cover.. so it become a pain. But point well taken.. I'll definately leave it out then so I can retain the CO2.
Thanks for everyone's help.. I've been in the hobby since age 10... but the questions still never end. Its nice to have a forum to exchange ideas... a pity i didnt come across this site earlier. haha.