Paint it black

Never fail, the heat of summer brings questions about algal growth in water tanks. There are lots of suggested solutions, but questions about pH antagonism and phytotoxicity seem to linger.

We’re planning on some summer trials for 2021 to explore how well copper pipe, copper wire, copper sulfate, citric acid and chlorine pucks work, and whether they cause trouble on crops.

Until then, sing along:

Paint It Black

The Rolling Stones

I see a white tank and I want it painted black
No algae anymore, I want my water back
I see the cart drive up while spraying summer rows
I have to dump it out until the algae goes

I see my neighbours’ tanks and they’re all painted black
With copper sulfate they claim algae won’t come back
I see them turn their heads and quickly look away
They see my algae grow in sunlight every day

I look inside the tank to see if it is black
I could park it in the shed, or in the shade out back
Maybe then it’ll fade away and I can face the facts
It’s not easy filling up when your filters plug with crap

I wish that my green sea would turn a deeper blue
If you try chlorine pucks it will clear up for you

I’ll store my tanks away from that bright summer sun
Then I’ll spray algae-free before the mornin’ comes

I see a clean tank ‘cause I had it painted black
No algae anymore, I got my water back

Hmm, hmm, hmm
Hmm, hmm, hmm
Hmm, hmm, hmm
Hmm, hmm, hmm