Hydramix HYDGO5 5 gal Hydration Control Concrete Pool Finish - Concrete professionals immediately see the difference Hydramix makes to the concrete. Hydramix creates a more homogenous mix, meaning the concrete is consistent from the start of the placement to the end of the placement. Hydramix doesn’t allow separation of the mix, like normal batches tend to do. The finishers enjoy Hydramix concrete because the workability is dramatically increased and, when properly mixed, there’s no bleed water, or water of convenience to wait for. Finish time is reduced as much as 25%.