Algae Control

Question:
Help with pond and summer algae?
I have a 2 acre pond surrounded by mostly trees red (swamp maples) and the pond is mostly fed by runoff at the bottom of a hill, the pond was built in a swampy area (there are a number of seeps in the area, so it is fed by seasonal seeps/springs also) I usually have overflow for 4 to 5 months of the year of at least 10 gpm (more when it rains)...

The trouble I have is in July/August when there is no overflow and I lose from evaporation 3 to 4 feet of water level and the pond develops green algae, I am aware of using barley straw to control the algae, Is there any other methods to help?


Answer:
There are several products made by Microbe-lift that will keep your water clear. I have used many of them and they all work well.  I would start with Microbe-Lift Sludge and then use Microbe lift PL after that.

Southern Ponds

Days are starting to get longer. In the South, ponds are beginning to know spring is coming. If your water is getting cloudy from sitting in the cold weather for so long, it's a good idea to give it a good start for spring and avoid an algae bloom if the weather unexpected warms up. Try Microbe-Lift Nite for use in colder water to give your pond advance protection against unexpected nitrification.

Algae

Green water is often a problem in full sun and well fertilized plants. Do not use chemicals to control the algae--it will kill your lilies. Instead, encourage a healthy growth of submerged plants like anacharis one bunch per square foot of surface area, which will help starve out the algae. Some floating hyacinths or water lettuce will also help, but watch they do not get out of control.

comments on comments

Question:

just started up a 100 gallon pond and all but 4 fish died so we drained it and started again , now its doing better but in the last few days its getting darker in color, i know we need some alge but how much is too much? we have 4 koi and i apple snail and a few - 18 small very small gold fish one lillie pad plant and one cleaner fish cant think of its really name , anything you can do to help us , its not easy being green!!!

Pondlady sez:
You have waaaaayyy too many fish. You can't have koi in such a small pond. A koi pond must be at least 3' deep with massive filtration. You can have 3 or 4 goldfish in a 100 gallon pond.
You also need at least 10 bunches of anacharis and 1/2 of the top of the water surface covered with floating plants.
Check my web site: www.pondlady.com, click on resource center for lots more info.

Algae Blues

Algae can easily be controlled.

1. Balance your vegetation, marginals (with good root systems such as
Pickerel, Iris), oxygenators (parrots feather, anacharis) and surface
coverage (water lilies, parrot’s feather). Also be patient, nature tends to
correct itself. I've found that patience is much better than trying to
overcontrol pond chemistry.

2. When pH gets on the basic side algae flourishes. Vinegar is weak and it takes forever (days) to neutralize. But it takes an expert to use muriatic acid properly, so do not put concentrated muriatic acid in your pond to balance pH!

3. It is good to have algae slime on the sides of your pond... this is a
sign of a healthy pond and can generate up to 70% of the oxygen needed for
your pond.

4. If you feed your fish, use a biological filter. The nitrate load will always get high.

5. Fresh water mussels work great and multiply faster than goldfish. But
if you get hungry they are great over linguini.

6. Scotch Barley bales work, but the pond must be cleared of algae first and
it will take some time to initiate the decomposition process. Approximately
3 months in a zone 6 winter or 1 month during the summer, i.e. you will need
overlap when exchanging the bales.

7. Black dye is very effective and is asetheticaly pleasing to show off
water lilies, but again the pond must be cleared first of algae. The other
trick is having the right amount in the pond. Since I use a white sand/pea
gravel for my pot topping, I add dye until I do not see the stones. This is
tricky, because it can slow plant growth if put in too strong and if not put
in high enough concentration you will get algae formation. If you do go down
this road, then stay away from the blue or green dyes. Trust me you will not
like the result.

8. There are several products on the market that will wipe out algae
population without harming fish or desirable plants. The downside is they
wipe out all of the algae and you may end up with an anaerobic pond.

9. Displace 25% of your water with non-chlorinated water (well or rain) on a
weekly basis during > 80 F weather.

10. UV (ozone) will work and is good when you have a lot of fish. The down
side is the ozone is a great oxidant and will kill some of the beneficial
critters. UV lights will NOT work for blanketweek/filamentous algae.