Jack and Ash say Hi!

Hello all, I am new to the Cavy craze since my 6yr old daughter wished for one, we have two brothers from the same litter born in January of this year (2016) they are brown and white sheltie's and are super cute named Jack & Ash (bruce campbell fans) we also had an american standard named Brisco but we had to give him away he was to agressive to the brothers after a while and liked to bite, I originally made them a 2x5 two lvl C&C cage and used fleece and what not but have just recently changed to a plastic 3 level utility shelf with coroplast, pine shavings and ramps with led lighting to which I can change colour and dimness. I will be posting in the medical/Vet section soon with photos because for a while now Jack has impaction problems and I think it is now beyond my help and it could be because I am new and to fully understanding what I am looking at after cleaning. Cheers!