Just impulse buy.....then keep adding tanks! hahaha.....
Can't help you with your decision. Bigger is always better, but I understand moving that bigger tank is more of an issue. Tough call....
Haha, I've found I rarely impulse buy (unless it's junk food). Instead, I research and stress over the details and waver in uncertainty and then FINALLY commit after I've annoyed all my friends (and not to mention myself). It works out well in the end because I've made thought-out/educated decisions, but man the process is annoying!
I have the Fluval 306 on a 40-gal and it's considered by some to be overkill. I love this filter b/c it's very easy to use. I bought a 206 for a 20-gal I'm going to set up. So in answer to your question re: an extra HOB, I really don't think you need it.
That's good to hear, thanks! I keep reading that over-filtering is the best way to go and it can always be adjusted with quick-stops or a spray bar. I guess I figured the 306 was over-kill for a 20g, but maybe only just sufficient for a 40b.
I can guarantee you that no matter what size you get -- 20 gal, 200 gal, 500 gallon.... you will always want something bigger. ALWAYS. So that being said, I would say just get what you can comfortably afford.
I keep hearing this, too, which really starts pushing me to getting the 40b. It would really only about $70 more in equipment (+$38 for next size up in lighting, +$10 for larger tank, +$22 for another bag of sand assuming I go with potting soil over all sand to save some $). But I guess it would also take more $ to stock with plants. How important is it to start heavily planted, or can I gradually add more as funds allow?
Thanks for the head's up about electrical outlets, I hadn't considered that either!
Oh, and not sure about the heater -- do you really need 200w on a 29-gal?
I liked the idea of an in-line to keep the tank more open and so I don't have to worry as much about accuracy (as long as I tape the dial so it doesn't accidentally get bumped). I'm big on aesthetics.
Would 200w still be too much on a 40b? I could probably have better luck hiding a submersible to my liking on the 40b.
Re: guppies... if I can safely keep them (and shrimp) in one tank, I'll stick with all male guppies. Pretty much I am very attached to my current three males, who get along swimmingly (lawl).