MT, I need to come steal some rocks from your place! I would love to have a truckload of rock like that. You will be so much happier without those rocks on the bottom. My stream is green and greener now. I was keeping up with "grooming" it daily, with my morning coffee, but having company over and then gone for 4 days the green goo took over. Not as much string algae as the spongy type. Got most of it pulled out tonight, along with cleaning out the goldfish pond bog. Wow, do I have plants multiplying in there! But, I keep wondering, why do the hyacinths not do well in my ponds? I wonder if it has to do with the hardness or something of my well water. I seem to recall reading something about hyacinths liking maybe softer water than what I have. I pulled a bunch of them tonight and put them in buckets of Miracle Grow water. Hoping that will help them out. Will put the rest in tomorrow when I toss these back into their nets. In the goldfish pond, they are doing the same whether they are in the netted ring or open ring. Koi pond, doing pretty poorly in the netted ring.
Good luck with your new plants and getting rid of your string algae. After I messed in my stream, I think I would prefer the string over the spongey stuff. At least the string will come off, the spongey stuff pulls up the rocks and everything! I have pea gravel and some river rock in the bottom of the stream ... pretty sure that will be coming out now, too!