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I'm experimenting with growing lettuce on my south facing window sill because lettuce is so damn expensive where I live.
At first they grew too leggy; clearly they didn't get enough light, so I made a light reflector out of cardboard and now they are growing fine.
My problem is the afternoon sun, it's making the lettuce all droopy and even scorches the tips of the leafs. So I installed a 5v fan to blow cooler air on them and it has worked fine for a couple of weeks but as we move further into summer the sun is only getting stronger and my lettuce has begun drooping again so now I have to babysit them every afternoon with the blinds... and I don't want to have to constantly babysit them.
Do triple glazed windows magnify the suns heat or something?
I tried putting shade cloth over the window but it makes it look a crackhead lives here and also I feel it blocked too much of the light when the sun wasn't directly on it.
I'm thinking of buying a clear plastic sheet, sanding one side of it to diffuse the light and putting it between the window panes, yay or nay?