Prevent excess proteins from contaminating the water
You are required to take out 20 per cent of tank water and replace it with clean water. Do this four days before you have planned to go on your vacations. In addition to this, you need to replace it once every day for these four days. With this task, you can prevent contamination of water due to food blocks with excess proteins.
Determine the time duration for feeding your fish
You are required to evaluate the time duration of feeding your fish. In case you are going for a week, then you need to add the extra 24 hours in your away time. In short, your vacations will be counted for eight days instead of seven days.
Choose adequate fish blocks
You need to pick fish blocks which lasts for the number of days you will be going to your vacations. Also take into account the number of fishes in your tank and the size of your tank. Remember that most fish blocks are suitable for 20 fishes in a 10 gallon tank.
Choose the location to place your blocks
You need to determine the place where you will place the fish food blocks. In case your tank contains a aggressive fish, you need to place the blocks near passive ones. With this placement of food blocks, all fishes can be fed.
Set the blocks right before you leave for your vacations
It is recommended to set the blocks right before you leave for your vacations. Since these blocks dissolve after four hours, your fish will start consuming it in the right time.