At 40 watts you're getting more to the level where you're more likely to have issues if you don't supplement carbon/CO2
. I'd still probably go with Flourish Excel though. It's not going to be very expensive on that size tank.
(same as those expensive pretty packages you were talking about) is by nature variable and more likely to cause BBA. While DIY CO2
was a worthwhile experiment and introduction to CO2
it is such a pain to maintain. I think that in most situations it's better to use Flourish Excel or go with Pressurized CO2
. By all means give DIY CO2
a try if you really want to, but you'll probably tire of it after awhile and be looking at one of the other two solutions.