Vertical growing system

A horticultural cleaning system comprising:

• (a) first tank having (i) a first inlet port in fluid communication with a horticultural system drain port, (ii) a first outlet port, (iii) a first pump in fluid communication with the first outlet port, and (iv) a first pump outlet line in fluid communication with the first pump;
• (b) a second tank having (i) a second inlet port in fluid communication with the first pump outlet line, (ii) a second outlet port, (iii) a second pump in fluid communication with the second outlet port, and (iv) a second pump outlet line in fluid communication with the second pump and in fluid communication with a horticultural system input line;
• and
• (c) a mobile cart having (i) a first storage platform sized to seat the first tank, and (ii) a second storage platform sized to seat the second tank, wherein (iii) the first storage platform is formed within a cart recess so that the first storage platform is lower than the second storage platform, and wherein (iv) when the first tank is seated in the first storage platform, the first tank first inlet port is positioned below the horticultural system drain port;
• (d) wherein (i) the second pump is configured to pump cleaning fluid from the second tank to the horticultural system input line, (ii) the first tank is configured to receive the cleaning fluid from the horticultural system drain port.