Originally Posted by Dubs1281
How do I even approach him on the subject. "So yeah, you have in fish that will reach ten inches and are extremely messy which require cooler temps with fish that should be I schools of 5+ in water of 78º. And your filtration probably doesn't even cycle the aquarium more than 10 times per hour so I assume that your doing a 60% waterchange an hour. So if you could stop that'd be great"
Maybe, "Hey Mr. ---, I'm a little concerned about the fish tank. I am really into fishkeeping, so I have some advice. (Say what you wanna say)."