Great white sharks. Trophic Pyramid Information that is in video: An ecological pyramid (also trophic pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or biomass productivity at each trophic level in a given ecosystem.
The risk is that you may not be able to remove all the acid and if it is left on the metal it will continue to corrode the metal. So to give you a quick answer, you can use vinegar to etch the aluminum, but you have to rinse the surface thoroughly to remove all the acid residue.
411. My aluminum trailer is 21 years old and gets acid wash at least once a year, usually twice a year. There is no noticeable damage to the aluminum. I do it my self, I get the stuff in a gallon jug, I put about a cup in 5 gallons of water, more if needed for the roof when trailer was left under oak trees.ut to just wash away the aluminum oxide is to wash away part of your trailer. If the AL is protected by some coating and the acid wash is just cleaning the coating then that's perfectly OK (assuming the intregrity of the coating). G. 1 members found this post helpful.