My brother finished hooking up his water cooling system yesterday and now he's leak testing. He bought a 2 oz bottle of that swiftech hydrx, mixed it will 1L distilled water and poured it into his double bay reservoir. It only filled up a little more than half way up his reservoir so he put distilled water in for the rest. HeI ended up using probably close to a little under 2L of distilled water when the original mixture says 1L. Should he get another bottle of the hydrx and dump it in or should he be ok?