Fritz PRO - Ammonium Chloride - 500gm

Works well for fishless cycle. Took about a month and a half to cycle a new 100gallon tank using this. Would be better if they sold it in a smaller capacity. Took like 50gms or lesser for a full cycle. I’m left with 450gs now.

Bought this for cycling aquariums. Works well. It does its job.

Doesn't come in a cup but instead a larger zip-lock package. There is A LOT of product in it and I mean a lot, I struggled to close the bag a lot. My tank was alr at 0.50 and a little less than 1/8 of a tsp raised it to 2 in less than an hour, it works very well and fast.

Using this to cycle my new 90gl. My system has been running for a couple of months already, but I've been to busy to do anything with it since I set everything up. This stuff works great. Getting the measurements correct are a little hard, but I found that 1 tsp raises my NH3 to near 0.067 mg/l. The first dose took around 2 weeks to cycle. Once the ammonia levels dropped back to 0.001 mg/l my NO3 tested at near 5.0 ppm. The amonia levels from the second dose of 1 tsp is still reducing, but it's only taken 4 days to drop down to 0.018 mg/l. I plan on testing Nitrate levels once this cycle is completed and duing a 50% water change before dosing a third time. I think 3 to 4 cycles should be enough to stabilize the system. However, since I won't be adding livestock for another month or two. I'll probably add 1/16-1/4 tsp each day to feed the bacteria. I'll adjust that as needed. Hopefully, I can maintain my NO3 at 3-5.0 ppm with this. I definitely recommend this product if you want to save yourself some time. I prefer this method of micro dosing while cycling my tanks. I think it's easier to mimic a normal daily feeding schedule this way. Also, I get a pretty good idea of how my tank params will change daily when checking my system logs. I may increase my daily dose later about a week or two before doing a final water change and adding livestock. I use the Seneye Reef for active monitoring, and manually test the water weekly.

awesome