Hi Luis
This is awesome mate... I've been reading the journal again from the beginning trying to learn things. Let me ask you some questions:
1. did you noticed the difference between the VIV and Do!Aqua diffuser... I'm asking this because I recently purchased for my nano tank an Elos10 CO2 diffuser. Not cheap, I have too admit that I was quite reluctant to spend my money on this gadget but I recognize there is a huge difference compared with my previous cheap eBay diffuser. What about the VIV ones?
2. What's the sand you're using? I'm planning a new layout and I would like to use only sand/fine gravel (capping a nutritive substrate). I'm looking for something having this color or maybe more greyish but easy maintenance. I had once JBL Sansibar White and I had to change it every two months to look nice (and much too white, quite artificial IMO)
Thank you!
Jordi