Yes i am suggesting you should do more water changes especialy if you want to keep rays.krytan- I do water changes every 2 weeks like suggested, why are you saying I should do more?
Also checked online and it says everywhere 125 gallon is fine because the ray im looking at only gets 10-12 inches wide...obviously I would upgrade when he gets full size in 2-3 years...
Even the smallest of rays need a tank 24" wide also plants don't do well in tanks with rays.