Fran59
Aquarium Advice Apprentice
Hello, I am setting up a new 29 gallon tank and am using a 4" pvc elbow for a cave & have it situated in a corner with gravel filled in behind it such that it creates a raised area where I have planted a crypt. I backfilled gravel into the cave making it look half moon, and have an annubias attached to the top. It turned out to look nice, IMO, but .... after reading about problems with stagnant water I am concerned about the safety of my fish. Will my cave create problems or will the 4" size be adequate for water circulation? I won't be able to move it to clean and unfortunately didn't think about that until I had already used it. Haven't added fish yet, so I can remove it but really like the bank it created. Thanks in advance for any info!