LARGE VOLUME WATER CHANGES - Why You Should do Them on Goldfish Tanks

Another thing to keep in mind when doing water changes for Goldfish is that they produce a hormone which inhibits growth for conspecifics (themselves and other goldfish). So, if you want your fish to grow large and fast you need to do large water changes to remove this hormone from the water. This also means you can't just rely on things like pothos and other emergent plants to maintain water quality for you, they certainly help but big water changes are always the way to go with goldfish in my experience.

Big Bubba is looking dapper

I really appreciate these videos. You're very thorough and address topics that need to be more in depth no matter how small it or large it may seem at face value. And the fact that these are videos as opposed to articles (which I still value a lot) I learn best with some visual examples and listening.

the point is that filters filter debris from the tank and not chemical changes in the water. thanks for the vid man.

I normally do 80% a week, never had any problems with it & my fish seem to absolutely love the fresh water.

Luke you are awesome..you have given me the inspiration..I now have 3 oranda,s and just got 2 ranchu,s..im hooked on the fancy goldfish..

oh i appreciate this video explanation! thank you. my new calico came from an overstocked tank in the pet store. so after i did a 50% water change she was seen sitting at the bottom of the tank which got me worried.. thanks to you now i think she's just getting used to the new chemistry. i should've changed less

I have two fantails in a very very heavily planted tank, both inside the tank and plants coming out of it. I test it regularly and only have to do 25% water changes weekly. I’m sure if I didnt have the plants I would have to go larger. I have another heavily planted tank with baby black moors and I’m changing it three times a week because of growth hormones. I think it definitely depends on the tank. 🥰

Never owned a fish but just got recommended to your channel, I love the content and format! Small thing, but I think you could add a short outro recommending another of your video. Might keep people on your channel longer?

I always quarantine new fish, test ammonium/ammonia, PH, temperature and Nitrite. However I didn’t have a test for nitrate. I had a lot of problems with fish dying after 1-5 days after getting them and I couldn’t figure out why. But the fish that I already had before getting new ones survived through everything. I tried to use medicine for worms and white spot etc. but nothing changed. I have fantail Goldies. However I guess it’s either because of the nitrogen (due to too small water changes). All other tanks was working fine. I only had problems with the Goldie tank. I stepped up and tried to do bigger water changes (like 50-75%) instead of smaller ones like 25-30%. And now they all seem to like it and even new fish survive as hoped for.

Luke thank you my boy !

Thanks for your content. I love it

Awesome video

I always do large volume water changes for my two goldfish

When I see a good person I automatically subscribe.. that's why it took me only 1 short video to sub

Best goldie chanel by miles...

Hey Luke!! I’m getting my goldfish in a few days and I would love to know your opinion on what to do! Should I start out with 30% water changes 2-3 times a week? How can I slowly get it down to me doing a big water change only once a week? You’re awesome! Love your videos!!

I keep koi. And when I first started many online guides mentioned to only do a 10% water change weekly which is definitely not sufficient. My kois get a 30% waterchange once evert 2 days and they are swimming around looking for food right after a water change

Thank god I set up auto water change. I can do 200% wc each day.

60-70% once a week for me 🙌🏼