Quote Originally Posted by Greentoads41 View Post
Then why did my wisteria previously do ok with the low lighting I have?
Probably because before you bought the filter, the triangle of CO2, light and Nitrates were the right balance for the wisteria to thrive. Since you had a drop of one nutrient (the nitrates in your case) that balance was lost thus the wisteria becoming transparent. Im sure once it recovers and adpats to the new levels, it will pick up and thrive again without any interference on your part.