I have the 48" aquatic Life T5 Hybrid setup with 3 hydra 26 HD's and like it but aesthetically I think the Geismann looks nicer. Also the Aquatic life has no cable management to speak of and each of the T5's power cords come off opposite ends and are only 4 foot cords requiring extension cords to plug them in, quite ridiculous.
I have not looked into the geismann but research cable management because it is a lot of cords to try to make look nice. I have also read lots of complaints of the Aquatic Life T5 power connector that the bulbs plug into melting onto the bulbs. I have not had that issue but only run my lights for 5 hours per day.