Something Else

You know.... I think you just solved my days worth of fatigue..... It has never occurred to me that I need to add more prime if there is more chlorine but it makes total sense. Bottle says to add X ml to Y gallon and I never thought twice. .. or once LOL. I used to average the amount with the lid, and add a little extra incase im off, then recently took the 4L bottle and put it into an EasyGreen squirt bottle and using the 1ml pump as a measurement and dosing as per bottle instructions. Today, there was a storm, and when there is a storm, my city loves to dump chlorine into our tap water.... Thanks for replies

Setup:55 Gal, 0 amonia/nitrite, ~60 ppm nitrite before water change, 74°F, PH 7.5 KH 40 GH 160. HOB Aquaclear 70 and 2 air stones for circulation. No CO2, planted, led light, using thrive all in one 2 times a week (ez green was put of stock), and Aquarium co op root tabs in substrate. AAA potassium sulfate ~10 ppm weekly tank mates: 8 black phantom tetra,6 rosy barbs, 7 zebra danio, 1 moor goldfish, 3 ivory snails . Typical Schedule: Sunday remove 50% water (EI dosing plants), add seachem prime, sometimes add excel, then refill tank after a few hours I add potassium sulfate ~ 10 ppm Recent Schedule: last 2 months I have not been on schedule, and have been doing water changes ~ every 2 weeks instead, however I did them the same way as explained above. Last week I noticed nitrates accumulating, I missed the Sunday September 26 water change, so I decided to do a water change as I typically do on Tuesday September 28, then planned to get back to my regular weekly changes. Problem: Today, did a water change as I usually do and came back to 4 dead fish and the rest are barely able to swim. I don't think it's due to .....PH as the tap and tank were both ~7.5. The temp I added to the tank was slightly cooler and brought the temp down to about 69°F, but that's not unusual. I used prime de-chlorinator before adding fresh water. Fish didn't seem to show signs of stress before the water change... About Me: I tend to feed heavier I feed once a day about 6 days a week. I let the flakes hit bottom for snails and bottoms feeders in all tanks. I own two 55 gals, one 20 Gal and three 10 gallons, I only had this problem with only this one tank, but my schedule and water change habits and fertilizer habits are the same for all tanks. Any idea what happened? I honestly don't feel like I can keep up with this hobby anymore, every time I think I know what I'm doing I kill another batch of fish 😮‍💨

So I bumped into a couple of Jack Dempseys, lovely little mating pair. I had to have them, impulse buy. Got home and realized I'm all out of Quarantine Trio. I head back to big Al's to find out Maracyn, Para Cleanse, and most all meds are no longer allowed to be sold to consumers in Canada. The only way to get them is from a vet prescription, which honestly I can't seem to afford or find a vet locally willing to prescribe meds for fish without being them in and stressing them out. Long story short, I was only given a small selection of available meds from the local pet store, and all the tank mates for the Jack's have now passed away. What would be the recommended alternative to the Quarantine Trio, but available to Canadian consumers without a prescription? Help is much appreciated, I lost many fish from my impulse buy, but let's be honest it will likely happen again one day, but I need a plan in place for medication. Peas and Tanks!!!