Hi! We just purchased and moved into our first home, and it came with a
pond. We have 2 big Koi and several smaller goldfish. About a week
after being here, our water became very green and we can't see the fish
So, can someone refer me to a good, affordable UV light for our pond? I
can answer any add'l info you need maybe, we don't know a lot about this
pond!

Time for an education. You need to be able to figure out, and find out the
answer below. Sick pond, we need to know its temperature & symptoms:

Sick Pond Form

Pond Size in Gallons? (litres*.26=US Gallons):

Water Source (Well, Irrigation, City?)
If City how is water treated?: =

Time in Operation?
(How old is the pond/water?):

Liner type? (EPDM,PVC,RUBBER,Cement/Concrete etc):

Fish Population?
Type? Size? QTY, Time in Pond:

Food? Type and Frequency of feedings.:

Pump Type, IN/OUT of pond, GPH etc
(Describe your filtration system as well as possible):

Prefilter media type? Last cleaned?:

Filter is BIO or Mechanical? Last cleaned? How?:

Carbon added? How much? When last changed?:

Aeration? Waterfalls? Bubblers?
Venturies?:

Water Temp?

pH?:

KH?:

Ammonia (ppm or mg/l):

Nitrite (ppm or mg/l):

Nitrate (ppm or mg/l):

Water Color, cloudiness, odor?:

Water changes? (% of pond volume and how often):

Additives used (water conditioners etc):

Tests done by self or another?:

Weather (what's it been like lately?):

Medications used?:

What Zone or Country of residence?:

~ jan
-----------------
(Do you know where your water quality is?)
Also ponding troll free at:
http://groups.google.com/group/The-Freshwater-Aquarium