Earlier today, I refilled my top off containers from the RO/DI system in the adjacent room. I noticed while walking into the fishroom that there was a puddle on the floor, and I quickly assumed that the connection to the float valve had failed, leaking out some RODI water. This had happened in the past; the fitting on top allowed water to leak past it due to the water pressure of new water being added. I replaced the valve which resolved it, but this occurence was too soon for that to happen. Still, I went on with my day expecting that puddle to evaporate.