Wouldn't it be 1.71? Because you're changing 10% of everything, so 10% of 1.9, not 1.
Is there a such thing as too many water changes?
- Thread starter Angelphish
- Start date
The 7 % wcs are a waste. Also if you did a couple of larger wcs instead of 30 every day it would be more economical.
I have 2 tanks in the living areas of my home and 2 in an unheated basement. The 2 tanks in the basement doesn't have pothos due to the much cooler temp. The nitrate level between the tanks with and the tanks without are about a 15ppm-20ppm difference, depending how one interprets the colorations of the API liquid test. How effective pothos are, depends upon their size. Given consistent warm ambient temp and good lighting, pothos can grow massively. A large enough thriving pothos plant will suck just about every last nitrate molecule out of the water. So, a pothos plant with a few 2' stalks, stuck in an HOB, will not do much for a 100gal+ well stocked tank. My tanks with pothos, range in the 5pp-40ppm, again depending on how one interprets the colors, but I keep the plants trimmed and not get overgrown due to it being in living areas of my home.
I think this schedule is great! If you have the time and willingness (and money) to do this, more power to you. I see this akin to a 'human powered drip system'. Personally, I don't feel the 7.5% am routine is a waste either, since it adds up to about 80gal a week.....or more than 30% tank volume.
Are you hurting your fish? No way. I feel there's more chance of hurting your fish doing massive water changes since there's 'less room for error/recovery' should the new water be "fouled" for whatever reason.
