Originally Posted by Jafooli
....have 2x 2ltr bottle at 1/2 tsp yeast and 2 cups sugar, and change one bottle each week? so basically one bottle is going to operate for 2 weeks....
Yes, that's exactly the process I use in my 20 gallon tank, along with a Limewood diffuser. I'm very happy with the results I'm getting. It's not a perfect system by any means. I do get a gradual drop in CO2 in the last few days of the week before replenishing a bottle. But it's good enough for me. This is my first live planted tank... and to be honest, if my plants grew any faster, I wouldn't be able to keep up with pruning and trimming!
Originally Posted by herns
I would go pressurized. No more pain mixing your stock every week ......
I actually enjoy mixing the CO2 bottles every week. It's fun!
55g: (in set-up phase)
20g high: Flourite, 2x24w T5ho, DIY CO2 + Excel, miscellaneous fertz. Otos, Red Wag Platies, Harlequin Rasboras, and way too many plants!