That's the stuff!
The label looks the same as the dunks I use, the dunks are 1-3/4"x3/4",and I use 1/2 of one in 5 gallons every 30 days,so myuneducated guess would be about 1 tablespoon per 5 gallons of water.
1/4 dunk per 5 sq ft of surface is what the directions say,so I might be using more than I really need to-but it doesn't harm the plants- only kills the gnat larva .
**edit- they won't dissolve,they just float around- so you may want to strain the chunks out before you water the plants...although the chunks won't harm anything if you just leave 'em.
The label looks the same as the dunks I use, the dunks are 1-3/4"x3/4",and I use 1/2 of one in 5 gallons every 30 days,so my
1/4 dunk per 5 sq ft of surface is what the directions say,so I might be using more than I really need to-but it doesn't harm the plants- only kills the gnat larva .
**edit- they won't dissolve,they just float around- so you may want to strain the chunks out before you water the plants...although the chunks won't harm anything if you just leave 'em.