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 . <EOS>