Hi! Im moving everything from an established 30 gal to a 50 gal even the filter and gravel. Do I need to cycle the new tank?
I know you probably already thought of this but I feel the need to mention just in case. Just make sure you don't rinse anything in regular water while switching tanks. You never know what people know and what they don't. Also, use your water from your old tank. Sorry if you already know this.
So, you posting this has a few problems. First off, this was not a post asking how to clean sponge filters. They were asking about upgrading to a new tank. In the video, with his report from Australia, he was stating that if you rinse your sponge filters in tap water very quickly then your not going to kill enough bacteria to ruin your cycle. Secondly, established aquarium could mean different things to different people. I've had people come in to buy fish and tell me that there tank has been cycled and when I ask how they said they set it up and let it run for a few days. As we all know, this is not cycled. When they said they had an established aquarium that could mean they had it running for 2 months, not enough time to establish a lot of bacteria. Also, he was just rinsing out the sponge filters and not rinsing everything in the tank to switch to another tank. If you rinse your filter sponges, even if you kill some bacteria then you still have bacteria in your gravel and other items in your tank and they will reproduce again. If you rinse everything in your tank to put in a new tank and the tank hasn't been running long enough to have a large bacteria colony, and you add more fish (the main reason people upgrade to a bigger tank) and increase your bio load in the process and decrease your ammonia and nitrite eating bacteria then your fish are in trouble. Your fish will get an ammonia spike on top of getting used to a new tank, which is very stressful for fish. I think maybe your comment had a place on another post but maybe not this one. That's just my opinion though. When switching to a larger tank you need every ammonia and nitrite eating bacteria you can transfer. They keep your fish healthy and happy and alive.I will respectfully disagree. While I'd never suggest rinsing filter media from a relatively new tank in tap water, it's safe to do so with established tanks.
You don't have to take my word for it. See. He's a lot smarter than I am.