I'm new to this forum, and figured it's a good start to starting this tank the right way...
I have had this 29gL running for at least 8 months now. I first thought I'd start with a community tank with a couple plants here and there.
That turned into me falling in love with planted tanks, and rebuilding my tank by throwing out the gravel and picking up Eco Complete, a bunch of plants, and replacing my light fixture with 79w worth of coralife T5HO's @ 10000k.
I tried going the DIY CO2 route but I don't think I was achieving much from it as it was not affecting my water parameters as I read it should.
Anyhow, long story short, I've been researching this walstad method for the past 2-3 months and I'm planning to build a 55gL as my first walstad tank. I do have access to Miracle Grow Organic Potting Mix. The one thing keeping me from starting this is what I should be using as a cap.
What's the best cap for a walstad tank? I read of a lot of people just using fine gravel, but I'm trying to be as cost effective as possible, now having spent so much money on the 29g and thinking I should've studied first.
I looked into PFS, or silica sand, but I also read that the dirt should be allowed to breathe, making me believe that the sand would be too dense of a cap for the dirt to remain aerobic.
What is my least problematic setup for a walstad tank? Now, I know I will be dealing with things for the first weeks of setting it up, but I'm looking for the best methods you guys have tried out.
Input is greatly appreciated.