5 gal= 18,927 grams of waterNitrite must be detoxified. It's harmful at any concentration, unlike ammonia.
60 gal = 227,000 gram of water
1 ppm = one millionth
so 227,000 / 1,000,000 = 0.227 gram of nitrite are present in your aquarium.
For the sake of our rough estimation, nitrite NO2 and table salt NaCl molecular masses are not significantly different, so we will just continue working with weights in grams and not bother with the moles.
One must have table salt aka sodium chloride at 100x excess to detox the nitrite, so:
0.227 x 100 = 22.7 gram must be added to detox 1 ppm nitrite in a 60 gal tank
Since NaCl molecular mass is a bit heavier than nitrite and since NaCl is rather benign, I'd go with a 1.5x-2x excess by weight, that is, I'd add 45 gram of table salt to a 60 gal tank to detox 1 ppm of nitrite.
Keep testing for nitrite and remember to replenish table salt when you do a WC. For instance, if you do a 50% water change, you will have removed 50% of table salt, so must add 50% back, that is 23 gram.
You can use kitchen scale to weight out the salt. Make sure the salt you are using is (almost) pure, like 99%+ sodium chloride without any additives, water, etc. The salt used for water softeners is good.
1 tablespoon without heap is roughly 15 gramSo without a scale, it is roughly 1 tablespoon of fine salt per 20g of tank water for 1ppm of nitrite. (more than 1x excess by weight)
5 gal= 18,927 grams of water
.25 ppm= 1/4 of a millionth
so 18,927/250,000 = 0.075 x 100 = 7.5708 x 2 = 15.14 which rounds to 15
Someone let me know if my math is correct
If it is I'm adding 15 grams of salt to my 5 gal aquarium
Ok I wont post so much. Im just confused on how to dose my 5 gallon aquarium with salt. You said 1 ppm is 1,000,000 so i was thinking .25=1/4 would be 250,000. Im probably wrong. Sorry for posting so much.No.
1/4 of one millionth = 1 / 4,000,000
May I please beg you to not post multiple posts in quick succession. You have 15 min to edit your post via the "Edit" button to add to it or to modify it. Please use them to the fullest. The way you post (like in a cell phone texting) makes everyone scroll 2x-3x more than we have to, because in the span of 5 minutes you post from 2 to 5 posts.
Haven't you noticed how your multiple consecutive posts have been combined above? I can't keep up with your fire speed. It will read too much nicer than a bunch of one-two worders or one liners.