The weeds in Blue Lake, Eurasian milfoil, curly leaf pond and the lilly pads have been mostly in the past controlled by herbicides, raking and pulling. That has changed in the past few years with the 2010 addition of microscopic weevils (little beetles), that in early summer through early fall feed on the Eurasian milfoil and cause them to die off. We are still in the early stages of testing these little creatures, but with the last survey in July 2011 showing the start of some progress towards slowing down the weeds especially on the west end with the east end also showing spotty results. We also added around 14,000 more weevil this summer along with the original 12,000 last year. The weevil were introduced to us by Sue Ellen Dollan one of our home owners and Enviro Science the contractor who put them in the lake.
The solar-bees are also designed when adjusted to different tube intake levels to help kill the weeds. At this time the solar bees are adjusted for algae growth, only the east solar-bee is set for some weed control in shallower water than the other three. There still is some raking going on by home owners in certain areas and this practice will continue as residents see fit to clear small areas, until the weevil take control. This biological control is a new and exciting option to the previous herbicide practice that is not preferred by our local government and environmentalists.
The algae problem in middle to late summer of the past years is partially due to the weed problem and lack of circulation, high PH and temperature control of our lake. To combat the different types of algae, some toxic that shuts down our lake and other non-toxic that makes the water quality  poor and stagnate, BLIA introduced the 3 solar bees (water circulators) to the lake in 2007 on a trial basis and were purchased in 2009 by BLIA donations and Metro with Metro having the ownership. BLIA still maintains a strong control along with Metro’s staff in pursuing the solar bees maintenance and supervision of the units. DEQ along with Metro has been an integral partner to BLIA in maintaining Blue Lake. Metro yearly has a water quality intern on Blue Lake monitoring the lakes temperature, ph, clarity and overall quality that aides BLIA in pursuing the overall quality and performance of the lake.
In 2011 BLIA with the help from Solar bee added a fourth unit in hopes of gaining better results of the water quality, mainly the algae problems. Solar bee has given us a two summer trial until October 2012 to test this fourth unit. At this time BLIA is responsible for the cost of the unit, but it is hopeful that Metro or another grant would help pay for the fourth unit. So far the summer of 2011’s lake quality looks very good, with excellent clarity( SECHY LEVELS), good ph numbers and an overall quality of the lake that we haven’t seen in 5 or 6 years. Let’s hope and pray that this continues through the summer and early fall. Upcoming updates can be seen in following this web site in the months and years ahead.

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