That is high nitrate on a drip, I would up the drip, overhaul the filters to remove sludge and keep an eye on the nitrate, the test kits look to be at max but when they do that you could be 500% of max and it will not show more.
Also try growing some devils ivy (pathos) it sits outside the tank and with roots in tank goes mad for nitrate. Many will say nitrate doesn't matter, they just fool themselves, try to get under 40 ppm and I bet they are perfect again. Some big water changes will help.
Also try growing some devils ivy (pathos) it sits outside the tank and with roots in tank goes mad for nitrate. Many will say nitrate doesn't matter, they just fool themselves, try to get under 40 ppm and I bet they are perfect again. Some big water changes will help.