Blagdon Clear Pond Water Treatment, 250 ml, Clears Dirty Green or Brown Cloudy Water Quickly, Natural, Wildlife Safe, Harmless to Fish and Filter Bacteria, 250ml, Treats 5,000 Litres of Water

This is by far the best for making your pond clear, I wasn’t convinced, I had tried other solutions but none really worked, a little but the water was never clear. So I added it to my pond, day 1 not much had changed, day 2 I could see a few fish (that I hadn’t seen for a while) day 3 the water was as clear as is possible… this stuff is magic 😉

I've tried several different produces, none clear the water totally! Clear pond does work better than some, used regularly. Follow instructions, know the volume of water in your pond. Has no affect on my gold fish, they have had more babies this year!

Great product, used it before and had no issues There are a few negative reviews on here stating it doesn't work or takes too long to clear so Ill try to expand on when it won't work and what it does The chemicals within this (mainly formaldehyde) bind together the very fine particles of detritus into larger clumps so your filter can catch them where previously they would pass straight through Will it remove muddy water? Chances are no, only a deep clean with a vac and large water changes will clear this, in fact cotton wool will do a better job in this case What is it is best at removing? Suspended algae and detritus floating in the water column. Do I need a pond filter? Yes, this chemical only binds the finer particles together in larger clumps, you still need a filter (50 microns or less) to catch the newly formed clumps Adding pre-rinsed cotton wool to the filter will also do this micron job How do I add it to the pond? I would suggest adding only the correct dosage as stated to the pond once a week, remember it's still formaldehyde, that's the chemical they use to preserve dead bodies Very very slowly add it to a moving water flow, preferably the point furthest from your filter The water will go a slightly cloudy white look, this is due to the chemical instantly binding the larger particles of muck which is why you can now see them How long will it remain in the water? Depending on your filter/pump flow rate I would expect 10x the volume of the pond / pump speed Eg. if a pond is 10,000 liters in size, multiply this by 10 = 100,000 and your pump is running at 20,000 liters per hour 100,000 ÷ 20,000 lph = 5 hours to clear Note* during the dosing cycle, ensure you keep checking the filter, if it is a 50 micron or finer, it will block quite quickly requiring regular cleaning of the filter, this is a must during the dosing cycle (A Micron is a millionth of a meter, So a 1,000 micron filer will have 1mm holes in it, 50 micron filter is, you guessed it, 0.05mm holes, the smaller the number the smaller the holes) I did shop around and even found it to be cheaper from Amazon than any local supplier which surprised me.

Brown water is slightly clearer following instructions but after 3 days it remains only slightly clearer.

Does a good job of cleaning the pond.

Cleared my small pond within 12 hours ,highly recommended

Turned water brown, ended up looking worse than before i started

Good product