Aquario - Neo CO2 Refill

Put about 300ml of warm water (about 50℃) into the bottle.
After closing the cap, shake about 100 times until the content is thoroughly mixed.
24 hours later, it turns into Jelly
Put in 1 pack of Biorefill.
Put 200ml of warm water (about 30℃)
Wait until CO2 is produced.
When co2 stops, only the water needs to be changed except the jelly.
Process #4, #5, #6 comes along later on