can someone help me out here? do i have near zero, very low levels of nitrates, or is 5ppm (the next incriment on my color chart) only a measure of a significiant amount of nitrate?nitrates are stuck at 0ppm (but the next incriment on color chart is 5ppm so i dont know what that really means)
yeah, my tank is open top and i always leave my window cracked open a hair id say i lose almost a gallon a day... and i only change about about half the amount of water i put in total... if not lesssI would also do water changes alittle more frequently than 1/3 of the substrate bottom every other month...what does that amount to in gallons? The evaporation could affect your GH, driving it upward if the loses are significant.
There are two hardnesses, carbonate (KH) and General (GH). It looks like you have ~16-18 GH . That's high. I have seen parameters for most planted tanks of <10 GH, and KH 4-8.
I am going with they aren't growing because there is no NO3 (possibly also VERY low CO2 at pH 8). Also, the root tabs are WAY gone, and swords are HUGE root feeders. You need to be dosing much more fertilizer and doing something about the CO2.
check my nitrates and ammonia for the first time in a month and it was 10ppm nitrogen and 1ppm amonia, dont think theyve ever been that high ever. in fact i think this is the first time ive ever had ammonia readings above 0.25ppm. probably due to half a cucumber i stuck in my tank last week... w/c time!