A system for dissolving solid chemical comprising: a solid chemical reservoir configured to receive solid chemical to be dissolved, the solid chemical reservoir have a porous bottom wall and at least one sidewall extending vertically upwardly from the porous bottom wall; a solution generator reservoir surrounding the porous bottom wall and at least a portion of the sidewall of the solid chemical reservoir, the solution generator having an opening through which dissolved chemical generated in the solution generator reservoir is configured to be discharged; a dissolved chemical reservoir in selective fluid communication with the solution generator via the outlet opening; a recirculation circuit that includes a recirculation pump and a recirculation line having an outlet, the pump being configured to draw fluid from the solution generator reservoir and discharge the fluid through the outlet of the recirculation line; and a controller configured to: control addition of water to the solution generator reservoir at least until the porous bottom wall of the solid chemical reservoir is submerged in the water; control the recirculation circuit to recirculate fluid in the solution generator reservoir to generate a solution having a target concentration of the solid chemical via erosion of solid chemical in the solid chemical reservoir; and control discharge of the solution to the dissolved chemical reservoir, characterized in that the outlet of the recirculation line is aimed at the porous bottom wall. a solid chemical reservoir configured to receive solid chemical to be dissolved, the solid chemical reservoir have a porous bottom wall and at least one sidewall extending vertically upwardly from the porous bottom wall; a solution generator reservoir surrounding the porous bottom wall and at least a portion of the sidewall of the solid chemical reservoir, the solution generator having an opening through which dissolved chemical generated in the solution generator reservoir is configured to be discharged; a dissolved chemical reservoir in selective fluid communication with the solution generator via the outlet opening; a recirculation circuit that includes a recirculation pump and a recirculation line having an outlet, the pump being configured to draw fluid from the solution generator reservoir and discharge the fluid through the outlet of the recirculation line; and a controller configured to: control addition of water to the solution generator reservoir at least until the porous bottom wall of the solid chemical reservoir is submerged in the water; control the recirculation circuit to recirculate fluid in the solution generator reservoir to generate a solution having a target concentration of the solid chemical via erosion of solid chemical in the solid chemical reservoir; and control discharge of the solution to the dissolved chemical reservoir, control addition of water to the solution generator reservoir at least until the porous bottom wall of the solid chemical reservoir is submerged in the water; control the recirculation circuit to recirculate fluid in the solution generator reservoir to generate a solution having a target concentration of the solid chemical via erosion of solid chemical in the solid chemical reservoir; and control discharge of the solution to the dissolved chemical reservoir, characterized in that the outlet of the recirculation line is aimed at the porous bottom wall.