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Your trying to do what your think is right for your fish and that is good. I also try to avoid chemicals but we already add water conditioner to remove chlorine so some chemicals are necessary.I tried plants (aquatic and aquaponics) to reduce tap nitrate and it had no effect. I now use Nitrozorb in the filter and nitrates remain at safe levels for my fish. I don't like additives/ chemicals either but the natural method left my fish in unsuitable conditions so it is necessary here.
I don't think Nitrozorb is a chemical as such, it is absorbent (absorbent?) like zeolite or carbon. You could say it alters the water chemistry but so do plants and fish.Your trying to do what your think is right for your fish and that is good. I also try to avoid chemical but we already add water conditioner to remove chlorine so some chemicals are necessary.
What filter do you use to reduce the hardness?I have 50ppm in my tap. In my experience plants help stop the nitrates from rising but will do very little to reduce them. I used to be paranoid about cleaning and not overfeeding. If you only have one tank and its reasonably small the Pozzani filter works really well https://www.pozzani.co.uk/product_info.php?products_id=185
At 50ppm the cartridge is good for about 600 - 800 litres and when I used it replacement cartridges cost £13. It drops nitrates right down to 0. Make sure you always have a spare cartridge because it doesn't degrade gradually. One day your water comes out at 0 and when its depleted it goes straight back up to 50ppm. In theory the cartridges can be recharged but I never succeeded in doing this (and I tried). I did this for about a year when I was changing 100 litres per week. This meant I was getting through the cartidges quite quickly and I ultimately switched to using RO water (just as well because I have 2 extra tanks now and change 200 litres per week). This was the better solution for me because I keep soft water fish so I used to have an additional filter to reduce the hardness, RO was the easiest option for me.
It was another of Pozzani's filters. Like the nitrate filter it is a de-ionising filter so no chemicals.What filter do you use to reduce the hardness?
ThanksIt was another of Pozzani's filters. Like the nitrate filter it is a de-ionising filter so no chemicals.