[el_heb]

I have a 10g planted tank, my water i think is a little hard but with DIY Co2 i have a constant pH of 6.8. I currently have schwartz corys, honey gouramis, and probably cherry barbs or neon tetras. Is it advisable to use Tetra's Blackwater Extract? or is it more trouble than it's worth? Does it allow pH fluctuations by softening the water?

 

[el_heb]

All right, thanks
As you said, it is cheaper with the driftwood, but will the pH fluctuate because of the Co2 and the softer water?