How to coat galvanized metal in reservoir against liquid fertilizer?

Hi,
in my reservoir (a big rectangle rain barell) there are three thin galvanized stabilizators. They go from one side to the other of the rain barell and their purpose is to prevent the rain barell from breaking when it is filled, because of the water pressure on the side walls.

See the small stabilzators in the photo: (exemplary photo with probably stainless steel, but in my reservoir they are galvanized)
https://images.obi.at/product/AT/1500x1500/780366_2.jpg

Now I want to make sure that the galvanized metal does not react with the fertilizer. Is there a way to coat them with a substance that will not react to the fertilizer? Maybe some plastic, epoxy, elastomer?

Isn't it galvanized because it doesn't corrode?

But my guess is that galvanization in a strongly corrosive environment, like in a fertilizer tank, is not the right thing. I need to know what stuff I can put on it and is resistant enough.

theres spray paint called plasticoat, they sell it all over, walmart, home depot, lowes, . a can of that ought to last you a long time. you'll probably have to touch it up from time to time, but it last a long time if its not getting a lot of contact.
they also make a dip thats tougher than the paint, but not sure if you could get the whole piece into the can

Coulnt you take something like duct tape,or a come along and while its filled and the bars are in wrap it around he outside to ahieve the same effect. Then you could ditch the bars all together

You could stick a pond liner in it or a thick tarp.

If your concerned about structural integrity of the barrel, replace the rods with stainless steel. I'm not sure how corrosive the nute solution will be on the galvanizing but it seems all it will do is add Zn to the solution.

I didnt read this all yet to get to the solutions.

Link breaks everytime and goes to a russian site. Google "solutions to corrosion caused by agricultural chemicals"

Its pdf but here is some science on corrosion rate.

GeneBanker said:

I didnt read this all yet to get to the solutions.

Link breaks everytime and goes to a russian site. Google "solutions to corrosion caused by agricultural chemicals"

Its pdf but here is some science on corrosion rate.

Click to expand...

Link works here, plastic barrel with two metal rods that MIGHT be an issue.

Both "best" options have been given, Plasticoat the rods or replace them with something that won't react.

PS

He could probably walk into his local diy store and get ready made stainless rods that would drop straight in, if someone sells the barrels then they'll sell the rods as, in time, they would need replaced regardless.

I sourced stainless steel in a grade which is commercially used in such environments. Also I sourced painting which is used on ships on the parts which are underwater.

Go to your local aquatics store and get some pond paint, comes in clear and black. Obviously it's water resistant and it's chemically inert.

thank you! good advice too!!! Much cheaper than the ship paint. But I am not sure if it will stick to a galvanized surface. Some paints don't hold on galvanized steel. I will see what is the best and cheapest option.

Sam&Max said:

thank you! good advice too!!! Much cheaper than the ship paint. But I am not sure if it will stick to a galvanized surface. Some paints don't hold on galvanized steel. I will see what is the best and cheapest option.

Click to expand...

Give the galv a run with wire wool first, I made my pond filter out of galv sheets and coated the inside with pond paint and it's lasted 15 years.