Ok so weird question here but I'm wondering if I need to worry about insects like spiders or silverfish crawling into my aquariums? I saw a silverfish tonight in the room where I have my tanks and I tried to kill it but it was too fast. By the way for those that don't know I'm talking about the insect "silverfish". I have lids on my tanks but there are still small areas where the heater and filter are that aren't covered. Has anybody ever had an issue with insects or do most insects stay away from water?