Hydrogen peroxide is so safe I would say use it as often as necessary. I use it in my pond on a regular basis with no harmful effects to fish or plants. I watch for signs that algae is starting to grow and add as needed. I find if I wait too long it's a bit more difficult to get rid of the algae again.

The fountain is a lovely focal point for your yard. I have a friend with a large pond and waterfall and it is wonderful but a huge amount of work. It's always something! They have numerous Koi and goldfish which produce new babies every year. Not long ago the pond attracted a heron or egret who decided it looked like a nice dinner spot. And the leaves need to be fished out and algae needs to be dealt with often. Another time the fish got sick from some parasite. And and and... Yes, a fountain offers all the ambient water sounds with much less trouble.

lydia the unicorn stable is next to the fairy garden and there are fresh carrots in the cooler. phyllis__mn ack ack guns are off so fly right in. BTW since it is phyllis's flying saucer it is no longer a UFO LOL joan_mn bring your purchase by to do show and tell! laugh and feel good LIL

Thank you everyone!... Jan.. I just got through with my deck and fence. I cleaned it first using Oxy Clean and some outdoor bleach on the stubborn areas. The stain/sealer is Deckscapes from Sherwin Williams. The color is called Cider Mill. It is an oil based product and I love how it went on. I brushed it on by hand, every square inch of it including the fence. I tried using a sprayer and it didn't spray out nice and even. It was honestly easier to brush then use the sprayer. It took me 9 gallons total for the whole job. I have some pictures of the deck, I'll post them here so you can see the bigger picture. I researched deck products for about a week and Deckscapes had good reviews is why I went with it. It is a semi-transparent stain to let the woodgrain show thru. After all that cleaning I did not want the wood to gray again, it will if you don't use a semi-transparent stain. I'll post the other pictures soon as I can find them..Debbie