yveterinarian
Super Active Member
- Joined
- Jun 7, 2012
- Location
- Innerkip, Ontario
Just thought I'd ask...what does everyone do with the sponge on the return pump? Do you switch it every now and then due to the potential for it becoming a nitrate producer? Do you even use a sponge on the return pump?
What is your opinion?
What is your opinion?