Anyone ever got a false Ammonia reading after mixing fresh RO
water with Instant Ocean salt mix.
I have been cycling my tank for about 5 weeks, and have seen the ammonia spike and fall, the nitrites spike and fall and nitrate rise. This was about a week ago.
Peak ammonia was between 4-8 ppm
. It's kinda hard to tell the difference. Nitrites peaked at about 4 ppm
and is currently reading 0 constantly. Nitrates are at about 20 ppm
. Test kit is Saltwater Master from Aquarium Pharmacuticals.
Trouble is the ammonia never really dropped to 0. It constantly hovers at 2.5 ppm
After about a week of 2.5 ammonia, I got a little suspicious and tested my fresh RO
water without the salt mix. It read 0 ppm
. So I was thinking my test kit was working fine.
Today getting a little fustrated, I testing some of the RO
water with salt that was aging in a 20 gallon trash bin. It showed 2.5 ppm
ammonia. Bin was purchased new and never used for anything but aging water, and before that was soaking in tap water for 2 days.
Getting more confused, I took a sample of fresh RO
water, mixed the salt, and retested after letting it rest for an hour. Again 2.5ppm ammonia?
Now I'm really confused, is it possible that adding the salt cause the ammonia reading in the water. I have salt from two different bags one in the tank and one in the trash bin so that probably eliminate a bad bag of salt...
I'm going to pick up another test kit tommorow, but it's strange that the water tested 0 ppm
without the salt and 2.5 ppm
with the salt.