I dont understand spending that much on a "purebred" dog. especially if she is going to cross breed mastiff and bernard for puppies. i spent about a $100 for our dog from the pound and he's just as big and lovable (st bernard/german shepard mix) our second dog we got basically free since we rescued her from the vet's office. Someone shoved her in the door and left and since they are illegal to own in that particular county (she's pitbull) they would have had to put her down.
and i mean no offense but i think it's ridiculous that breeders charge that much for a dog and even more ridiculous that people still buy them at that price.
On another note why cant you just add another fixture to the top of the tank like a 4x39watt t5ho which would only be about $250 depending on where you get it. i looked on catalinaaquarium.com