The basic rules that apply to water chemistry for in-ground pools apply to your above-ground pool. The water must stay balanced, you need to follow the program to keep your pool its clearest and healthiest, and you should keep it free from debris. The biggest difference between caring for an above-ground vs. an in-ground pool is in the tools you use. The bristles on the brushes and vacuums are different. Generally, vinyl liners use nylon brisltes and gunite pools use steel bristles. The new line of STANLEY pool tools is manufactured to last longer than the brushes and vac heads of the past. We have the complete line of vinyl Stanley tools in stock at The Above Ground Pool & Spa Company, San Antonio, Tx.