scoylesays
Aquarium Advice Apprentice
- Joined
- Apr 4, 2012
- Messages
- 12
I have a 20 gallon tank which actually amounts to around 17 gallons of water with the decorations. when I do a partial water change say 3 gallons should i only add enough seachem prime for the 3 gallons or for the full amount of water 17 gallons. Thanks.