How do you deal with a cold snap and a new system?

[Beth Medeiros]

HELP!!!!!   Our weather forecast for the next four days.  Every time I look at it, it gets closer and closer to the freezing point on Thursday night. 

We have an outdoor system, no greenhouse in TX.  It's not suppose to be this cold here in May!

 

My question is this - what is the best way to protect our plants?  Do we keep the water running since we have heaters for the fish tank? Do we try to cover the plants - I'm afraid they're a pretty good size now and I don't want to damage them? Do we just aerate the fish and stop watering the plants (it's also suppose to rain lightly all day as the cold front comes in)?

[Ian Cameron]

If your setup is a small as it looks, try an oscillating fan. Air movement is one of the best ways to defeat light frost.