just wondering if n e 1 who has grown up dovii can tell me how big i can get my juvi dovii to grow in a 6x2x2ft tank,& how often/large water changes should i do to increase his growth rate and potential.lastly any advice on feeding would be great.my six ft has 2 aquaclear 500s & 1 1500ltre an hour powerhead & 1 1200ltre an hr powerhead with a spraybar.i feed him 3-4times a day on flake, pellets,bloodworms and beefheart.ph of 7.3 tap water.