"SkyCatcher" wrote in message
...
Hi,

I have a 12000L pond with plants & NO fish. The filter/pump/UV are
appropriately sized & I changed the UV bulb 2 week ago - AND the pond if
still filled with green gloopy algae.

What more can I do to sort this out?

Help!



where is your pump in relation to filter outlet?

how is your pond fed? is it a liner or natural?

is it string algae (blanket weed to UKers)?

how fast are you pumping it through the UV?

where is the UV in relationship to pump and filter?

how much sun does your pond get?

for an approx 3000 gallon pond, id expect it to take longer than 2 weeks to
clear.. also might be worth slowing down the flow through the UV..

if its string algae (blanket weed) it will NOT be affected by the UV or the
Filter (it could however block your pump's impellor)

how old is the pond? how long has it been "green slop"?

recommend shading it a bit if in full sun.. and maybe introducing duck weed
(and many other floating plants...) to starve the algae of light and use up
some of the nutrients the algae is feeding off..

really need a LOT more info to really offer help...

BTW what GPH (LPH) is the pump? what Bio filter media are you using? what
wattage is the UV?

TIA

Lost