Outdoor water feature: will it go green? how to prevent

tired_dad

Hi, got a new water feature. Large water tank underground with submerged pump. Anyway, obvs its winter so not an issue now but when it warms up, will it go green? I presume it will as direct sunlight will hit it. My question is how to prevent it? There are no planting or fish issues. Its just a water feature

TA

grumbler

There are various 'algae control' chemicals on the market.

cajef

Plenty products to keep ponds and water features clear, ebay or try your local garden centre.

https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2380057.m570.l1311&_nkw=pond+clear+green+water&_sacat=0

kev25v6

Put a splash of bleach in the water. 

Grenage

kev25v6 said:

Put a splash of bleach in the water. 

Not great for wildlife after a drink.

Hasbeen

tired_dad said:

Hi, got a new water feature. Large water tank underground with submerged pump. Anyway, obvs its winter so not an issue now but when it warms up, will it go green? I presume it will as direct sunlight will hit it. My question is how to prevent it? There are no planting or fish issues. Its just a water feature

TA

A large underwater tank will not go green. 
What is the feature on top?
If no fish then there a various chemicasl to add to stop any algea etc.

If  fish there there is various chemicals to add, they usually do not work though 

Ajmason42

Other option a small uv clarifier but you will power

Mutton_Geoff

kev25v6 said:

Put a splash of bleach in the water. 

Not good for wildlife. I use Milton tablets.

Ebe_Scrooge

Mutton_Geoff said:

kev25v6 said:

Put a splash of bleach in the water. 

Not good for wildlife. I use Milton tablets.

Which is effectively diluted bleach - the active ingredient of both is Sodium Hypochlorite.

J_B

We've had one for about ten years - never had a problem.

Tank pumps water up which then 'cascades' down some sandstones back to the tank, 'we' sometimes clear the algae off the stones.

Never used any chemicals