Depending on the size of rez and if he is using massive or not.
As you stated, you’re using our Autopot 2 Part Feed Program, which consists of;
– Dual Fuel 1
– Dual Fuel 2
– Pk Spike
I would say if the res is 10 or less gallons and you’re not adding Massive, you should be fine. But if it’s bigger and you’re using Massive, you should have a small pump.
It’s always better to have a pump but it’s not absolutely needed unless tour running a carb source cause that can create a biofilm.