Zoo Med Laboratories Plankton Banquet Block Feeders - Giant Size (3 Pack)

I always drop three of these into the tank for 4 day weekend getaways, my large goldfish almost finish them before we get home

Fish stayed alive after a 1 week vacation

Handy feeder for when you are away. Seemed to do it's job and the fish seemed to be doing well after using this on our vaca.

they’re still with us and they love these, so I’ll keep buying them until something better comes along

we have a large fish tank with 10 fish and this weeklong feeder kept our fish fed while we were away and did a great job not clouding the tank

I previously left a negative review, which needs to be corrected. I can't find the review to edit it.Long story short, I left a review saying I paid for a 3 pack and only received 2. This was not the case. I was out of town and a relative of mine was going to drop one fish feeder in my aquarium. She told me only 2 arrived. I guess she's blind because she definitely put one in the tank and I still have 2 other vacation feeders in the Amazon package. Sorry for my previous review. Everything came on time and as described.

These blocks last between 4-6 days depending how many placos you haveAnd they love it helps me be sure they are fed while traveling

I simply wanted to supplement calcium for my inverts and have somewhere for my little fry to peck at and decided to try this since it's "time-released". Put ONE in my 35+ gallon tank around 9-10PM, at first a few of my shrimp flocked to it and I was pleased. When I checked on my tank just before 8am the following morning my water was so thickly clouded over I had to look through the top down to see anything at all. I had 4 dead fish floating and slightly fouled water. PH dropped from my average 7.2-7.6 to 4.8. I took this out immediately and called in late for work to do a partial water change, water still so cloudy I couldn't see an inch past the glass. I had to use baking soda slowly for the next two days just to get my PH back to a good and stable level, as it was still continuing to drop even after I took this out. As this had already stressed my fish out and I didn't want to shock them more, I decided to do multiple small water changes over the last week. Eight days later my tank is still clouded over that I can only see in 1/3 of the way through the glass. Thankfully my fish and snails are doing better and are back to being super active. One of my older usually very active snails legitimately hid in his shell and slept until 2 days ago - I know snails can take 3-4 day naps and he has before, but not 6 going on 7 days. Over the last week, I've only seen the same 5 of the 20 shrimp I had. I'm hoping the others are hiding out and I just can't see them in the cloudy water. With a strong flashlight, I've been able to somewhat look down over my substrate and don't see any dead bodies at least. Just 1 of a $10 3 pack, did well over a hundred dollars worth of damage in less than 12 hours. Honestly, the money lost doesn't matter as much as 4 gorgeous fish that were happy and healthy an hour before I put this garbage in my tank. As well as knowing everyone in my tank was suffering to some degree.This might work for some, but I won't risk ever buying a zoo med product again. Get this if you need to feed your fish while you are gone but don't care if they all die before you return home.