Sorry it was my fault nitrate level was more than 40 ppm160 nitrates and you are thinking about discus huh?
Discus prefer pristine water and a nitrate level of 30 or 40 is probably higher them most serious discus keepers would want let alone 160...you're adding nitrates to your tank only to have a discus orientated person tell you to change water almost if not everyday...Which would then remove the nitrates you just added.
160 is really pretty high for any fish tank and over time it will cause damage possibly to even some of the hardiest fish...
Fertilizer? I thought fish is the objective.
I have very similar kh (3) and gh (5) at my tap (&tank) water and since my tank does automatic daily wc of 25% kh has no chance to drop causing ph swing.
Discus love "soft" (low GH) water. They tolerate well nitrates up to 30-40 with that.
My advice. Stop messing water with those fertilizers or give the discus to someone's else. Good luck.
Do you have the fish allready? How big is the tank? Pictures. Plants are great in a discus tank. Best to get easy growers and have a separate plant tank. This way you can move plants if you have to. Water temp is in the 80s and a ph of 6.9 or lower is needed. They like warm soft acidic water. Pictures will help. Thanks and welcome to fishlore.
I’m in the US so had to convert lol. Yes that’s 82.4 which is fine for discus. How big of a tank.
Sorry just was the 160l that’s 40gal here. So that tank can take 2 discus.
Well, extra minerals shouldn't do the discus harm, except macronutrients like nitrogen and phosphorus, which are safe in low amounts anyway.Well, either way both are not needed and imho not desired to keep discus healthy and comfortable.