JTK
$100 Site Donor 2025
@alarmguy With your once a month 23-30% water change schedule, are you measuring nitrates? I know you've been at this a long time. I have too and like said, I didn't do it so well for a long time. Sustained high nitrates in a freshwater tank (~20ppm or higher) weakens the fish's immune system over time. The ONLY way to reduce nitrate level in the tank is through water changes. Filtration doesn't do it and chemical adds don't do it. I had an old timer describe it to me as high nitrates (in freshwater tanks) as being similar to smoking or being around heavy cigarette smoke. You might have fish tolerate it for years, where others will not.
I totally get it though, this can work for you if you are very lightly stocked, feed sparingly with quality foods (as I mentioned well above) and have live plants in the tank. This typically is not the new fishkeeper.
The other issue with non-regular water changes is, you are going to skew the tank water's total dissolved solids among other things over time. Water evaporates and leaves behind it's mineral content, etc. You continually add more minerals, etc with each top-up. This stacking of mineral content can result in a pH crash which will wipe out the tank. Again, water changes prevent that all from happening.
I totally get it though, this can work for you if you are very lightly stocked, feed sparingly with quality foods (as I mentioned well above) and have live plants in the tank. This typically is not the new fishkeeper.
The other issue with non-regular water changes is, you are going to skew the tank water's total dissolved solids among other things over time. Water evaporates and leaves behind it's mineral content, etc. You continually add more minerals, etc with each top-up. This stacking of mineral content can result in a pH crash which will wipe out the tank. Again, water changes prevent that all from happening.