Re: vacuum
I not going to argue with you but IMO you are wrong on so many levels. So I will take my 30 years of exp. and all my knowledge, all the books I read, all the mistakes I made, all the experts I talked with about fish health and water quailty, and know that my fish live full and healthy lives. 70% is way to much, first you will never get water temps to match (stress the fish) second you are taking most the ben. bac. when you gravel vac 70% of the water out, sending the tank into a mini cycles (stresssing the fish), but hey what works for you will not work for others.
Good luck with your aquariums and your pond.
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