Dwarf Puffers Added to Low Maintenance Shrimp Tank

Link to tank: https://www.amazon.co.uk/gp/product/B...

Update:
I have finally added two Dwarf Puffer fish to my nano tank. In order to keep the low maintenance character of the low tech nano tank I have also added roughly 30 Malaysian Trumpet Snails that will hopefully exponentially reproduce and serve as a sustainable food source for the Dwarf Puffers. They are a joy to watch and have a fantastic character. More videos around the fish and tank will follow so please feel free to subscribe. Have added a few links to the equipment that I use below the tank specs.

Tank specs:
20 litre Aquael nano tank
Low tech (only LED lamp that runs 5 hours and sponge filter)
No CO2, no heater, no water changes, no cleaning
Maturity ~2 month old tank
Heavily planted (natural filter)

Species in tank:
Approx. 40 Red Cherry Shrimp
Approx 25 Malaysian Trumpet Snails (food for Dwarf Puffers)
2 Dwarf Puffers
3 Otocinclus
2 Amano Shrimp
Community that gets along extremely well, no problems