HYDRACrystal Treats UpTo 50,000 litres + Pond Algae Green Water Remover 5Kg

Works well,it does produce froth on water

Excellent product. Did exactly what I needed it to do, however, the waste that is generated and sinks to the bottom of the pond is not very mobile and requires manual removal with a net. I don't think you would have any trouble if you had a bottom drain. The algae in my pond is clear, but I now have brown water issue instead of a green one! Hopefully in time, the bacteria will sort this out.

Always a bit difficult to calculate the amount of gallons in a pond with irregular shapes and internal shelves. I was a bit nervous at first knowing that I would have to use the entire contents of the package in one go. The product began to act quite quickly and I soon realised that there was much more algae in the pond than I had first thought. The following morning, there was quite a bit of sludge on the surface - but this began to dissolve itself and and although the pond water was not entirely 'crystal clear' it was greatly improved. Knowing that I had not entirely cleared the pond, I started to read the 'blog' on the web, and soon made the decision to make a follow up application and ony used half the contents, this did the trick.i shall be using this product again, and will do so more regulary.

It works, but, as per instructions, you need to be very sure you are giving the fish plenty of oxygen. I ran a battery sir pjmp with 2 air stones for a couple of days, and the fish were fine, and it certainly worked, just be careful in it's use.

This year I have a Green water issue, had great success with other products in the past, saw this solution and thought to try it out, some cost savings to be had as well.Read the instructions in detail and carried out the 24 hour test, the results were perfect, clear water. Waited for the outside conditions to be suitable and dosed the pond in-line with the calculated amount of treatment. Within 10 mins visual signs of Green waste congealing on some parts of the surface.That was it, nothing more over a few days, re-treated the pond a week Later with the same results.Based on my experience would not recommend this product especially for medium to large ponds, mine is around 13,000 Ltrs.

Hydra crystal green algae is a fantastic product. Clears green coloured water from your pond in 24 hours. Just mix it with pond water, add to pond, which makes the pond a milky colour and overnight the pond becomes clear again. Fantastic product.

Still got green slime in pond didn't work

Works very well but be patient can take up to 6 weeks to completely clear green water and needs treating again around 6 to 8 weeks later.