Help me pack my canister filter
My tank: 29 gallons, CO2 injection, 48 watts T5HO lighting, NPK+Trace and Iron dosed according to bottle instructions.
Canister filter is Ehiem 2217, everything is snug in the current configuration:
(From Bottom to Top)
Blue coarse pad
Ceramic (?) balls
API Nitrazorb and Phosphate pad
White fine pad
Now my question is:
Are the nitrate and phosphate pads robbing my aquarium of vital nutrients? Would replacing one or both pads with a bag of Purigen make a difference?