Makeup Water

I add about a gallon of makeup water to my 180 gallon tank each day. The water is premixed with various additives (aragamite for calcium and two pH buffers) and put in this tower of buckets I contrived. The water drips out of the tower into the sump of the tank. The sponge (below) at the end of the tube is to reduce the amount of calcium powder which enters the tube (and, eventually, clogs it).