Rookie right here....

[MattK]

1500 WATTS ON A 20g! Please explain how you plan on achieving that.

[Chibecca]

I wasnt being literal. Just tryin to get a feel for how many watts i can put on a single breaker with all the lights pumps and everything else. I have no idea about this , thats why i asked.

[Ping]

[(A x V) = W] -20% = Y

1500W is close to a max safe level for a 15a circuit.

20a would be 2000W. Just a rough ballpark figure to maintain a safe, long term circuit.