Can I dose APT 1, APT3 and/or APTe together?Updated 2 months ago

A common question is whether it is OK to 'mix and match' APT 1, APT 3 and/or APT e together. Yes you can do that. For example, after adding more fish, you can switch from using solely APT 3 to 'half and half' across APT 1 and APT 3.  

Using half APT 1 and half APT 3 gives about half the nitrogen and phosphorous levels that APT 3 gives.