Mar 29, 2006, 4:34 AM
Post #6 of 13
Thanks to all who have written so far. Keep the advice coming.
A little clarification (pun):
We do not have algae on the surface of the water, as is common in ponds. What we have is algae (brown) clinging to the bottom and sides of the fountain. Once it gets really bad the water is rusty brown with it. It is probably made worse by the fact that our fountain is old and the stone is rough and there are even a few cracks in the bottom that are sealed but are a good place for algae to form. Some day we intend to reline the fountain and put new tile around the edge of the lower tier, which will probably help as the surfaces will then be less porous, BUT this is not going to happen in the near future, as we are still working on basics around the house.
We have a new pump, but, so far as I know, we do not have a filter on the pump. I will talk to the guys at the pool store where I got the pump, to see if I can get a filter. Perhaps a UV filter? It has occurred to me that one way of reducing the bloom is to filter it out, especially since we keep the pump on 24/7.
The fountain is getting a little sun now that the direction of the sun is changing. Even tho I am always talking about photosynthesis and Lake Chapala's shallow water, it had not occurred to me that the sun was a problem. Now I realize that fountains I have seen surrounded by ferns and other plants were in an atrium where it is shaded. I will work on getting plants arranged so that it is as shaded as possible.
About the chlorine tablets: When I first redid the fountain, I killed one side of all the plants that I put around it because I had put one of those chlorine tablets in the water. I tried a half tablet and it was not enough to keep the algae at bay, and the plants still did not like it. If I get plants within about 2 feet of the fountain, the spray is enough to damage them. I would like to avoid using chlorine. That's the whole point of this enquiry.
Note that my idea of plants is to have them surrounding the fountain on the ground, and sitting on the edge of the bottom fountain tier--not growing or sitting in the water.
Also note that I prefer not to fuss around with goldfish. Just another mouth to feed!
Gotta go clean the fountain now!
I note that the ph is very high, and that algae is killed by low ph. I know I can get stuff to balance the ph at the pool store, BUT has anyone tried putting a cup of white vinegar in the water?
"Don't believe everything you think" - Maxine