Monthly drinking water variations are made a lot easier when using gravel vacuums. They clear the waste off the bottom of your tank while removing water to the partial h2o change. Make sure to include dechlorinator when adding the tap water back to refill the aquarium. 5 كايي Kayi 21 https://affordable-cat-accessorie21997.blazingblog.com/37552614/details-fiction-and-top-aquarium-heaters-dubai