Why is my Box Filter overflowing? 
There are a variety of reasons which could cause a Box Filter from overflowing, below we’ve created a checklist for you to be able to carry out some simple maintenance in order to keep it running as desired;

  1. If you have a new setup, please check the pump being used with the filter is not too powerful and is filling the filter faster than it can empty.
  1. If you are using a homemade box filter, then you may want to consider increasing the size of the exit hole/pipe.
  1. Check the outlet pipe is not blocked. This could be restricting the flow through the outlet, causing it to overflow.
  1. Check if the filter is blocked and needs to be cleaned. If the sponges/media in the filter have become too clogged this will reduce the water being passed through the unit, causing the water to flow out of the top, rather than through the outlet.
Please note that if modifications are carried out on our box filters, this could void your warranty. Please check your warranty for further details. For further tips or advice please raise a ticket with our customer service team who will be happy to assist.