With limited finds, I’d spend on plants rather than switch out the T5’s for LED - given the tank height of 64cm, you want high(er) watt, high intensity LEDs, which are much more expensive than the generic 0.2/0.3 low intensity LEDs often used in the lower cost LED tubes or LED units
As you’re running CO2, I’d focus on sufficient light for active plant growth in combination with sufficient nutrients - initially daily water changes can be the easiest way to reduce algae, encourage plant growth etc
Once tank is established with healthy plants, limited algae, then begin slowing the system down
As you’re running CO2, I’d focus on sufficient light for active plant growth in combination with sufficient nutrients - initially daily water changes can be the easiest way to reduce algae, encourage plant growth etc
Once tank is established with healthy plants, limited algae, then begin slowing the system down