I have heard that you want to attempt to do 1 mangrove per 10 gallons to get the proper "mangrove filtration." I could be wrong though lol. I have been thinking about putting them in my fuge as well. Sounds like a good idea!
Thiel suggests differently on his website. Here's the benefits he lists:
You will see 5 principal results:
-The Nutrients go down and are lower faster than in the Control tanks. This applies to phosphates and nitrates but also to silicates.
-Oxygen levels go up faster.
-BOD, or biological oxygen demand, is far lower in tanks with mangroves than in tanks where there are none indicating that the mangroves uptake more of the organic material than the skimmers removed in the other tanks.
-Oxygen levels stabilize and are generally higher.
This all takes time. It does not happen in a few weeks.
I'm thinking of trying Mangroves with ogo. From what I've read, Ogo is something tangs will love, so you can use it as food as well.