Are you loving your plant to death? New growth tends to look like that when the light is too intense... new growth is not established enough to perspire and cool itself as it is growing... especially under intense light. Move the light up much more, i.e. at least 3 feet. Many people put 1k lights at the max height and leave it there(like 4 or 5 feet over the top of the pot)... doesn't look like you've lost all your fan leaves.
I don't think you need to keep flushing, or mess with fertilizers for a little bit. You didn't mention if it is
Fox Farm Ocean Forest, light warrior,
happy frog soil? That matters... You can go an entire grow simply on Ocean Forest alone, with water and molasses... granted in the third or fourth week of flowering you will need some Calcium-Magnesium additive. Are you setting out your tap water for at least 12 to 24 hours before watering? It will cause microbial death in the soil, and possibly burn the roots (chlorine). pH should not be much of an issue, especially since you've made it this far.
Raise up the light... and make sure you don't have a fan blowing hard on the plants all day... this evaporates too much water, and the leaves dry out quicker. Best of luck, post up new pics, unless this looks much worse, I still think you will have a harvest.
Just a friendly warning though... don't expect tooooo much off of one plant in a 5 gallon container under 1k watts. A couple ounces (2 to 3) is about the best you can yield, especially with an unhealthy plant.
Keep me updated, and I'll help you. Relax with the flushing and
Clearex... no more nutes, make sure the water is set out at least 24 hours (preferred over 12)... maybe check the pH (but usually not necessary)... if you're real worried it may be a tap water problem, use purified or drinking store water. Distilled lacks the ppm to carry a consistent pH. Take more pictures and ensure that you aren't trying too many things at once... one change at a time so that we can find the source problem.
Good luck!