Cheapest thing you can do at this point is to add a T5 HO
dual actinic light in front of the LED
I can understand that you want to keep the cost down, but aside from that, go with your gut and try adding the ebay strip that you are considering. The Marine Land fixtures were an attempt for them to try and jump on the LED
bandwagon and lure people in to buying at a lower price point. The lighting effect is not pleasing to the eye, has no control of color temperature, nor the ability to create a dusk-dawn effect as all the bulbs run on one circuit.