# TLDR Review: Leisure Time RENU5 Non-Chlorine Shock

*Published: 2026-04-28 | Updated: 2026-04-28 | Source: https://shopsavvy.com/reviews-tldr/leisure-time-renu5-non-chlorine-shock*

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## Product: Leisure Time RENU5 Non-Chlorine Shock
**Brand:** LEISURE TIME

## Pros
- Effective at reducing chloramines in hot tubs, improving water quality
- Suitable for frequent use, ideal for regular shock treatments after each hot tub session
- Comes in a large 5 lb tub, offering convenience for ongoing use
- Easy to use for regular hot tub maintenance
- Helps keep the hot tub clean and functioning well
- Suitable for maintaining water quality over time
- Clears water typically within 24-48 hours, faster than some claims of 30 minutes
- Bulk purchase option provides cost savings and convenience for ongoing use
- Does not cause skin irritation, unlike chlorine-based products
- Provides a pleasant, soft aroma without harsh chemical smells, creating a spa-like atmosphere

## Cons
- Some reviews mention it takes longer than expected for water clarity, up to 48 hours
- Not as immediate as chemical chlorines, which may be a drawback for those wanting quick results
- Limited specific reviews on how it performs in very heavily used or muddy water situations
- No mention of compatibility with all types of filters or hot tubs, so some users might need to verify suitability

## Bottom Line

This Leisure Time RENU5 Renew Non-Chlorine Shock offers an effective, low-maintenance solution for keeping hot tub water clear and fresh, especially if you prefer to avoid harsh chlorine chemicals. Its large size and ability to resolve cloudy water within a day make it a cost-effective choice for regular spa upkeep. However, if instant results are your priority, you might want to consider a chlorine shock alternative. Based on current reviews, we think this product suits frequent hot tub owners who want clean water without harsh chemicals, but patience is key for best results.

## Pros vs Cons at a Glance

| Pros | Cons |
|------|------|
| Effective at reducing chloramines in hot tubs, improving water quality | Some reviews mention it takes longer than expected for water clarity, up to 48 hours |
| Suitable for frequent use, ideal for regular shock treatments after each hot tub session | Not as immediate as chemical chlorines, which may be a drawback for those wanting quick results |
| Comes in a large 5 lb tub, offering convenience for ongoing use | Limited specific reviews on how it performs in very heavily used or muddy water situations |
| Easy to use for regular hot tub maintenance | No mention of compatibility with all types of filters or hot tubs, so some users might need to verify suitability |
| Helps keep the hot tub clean and functioning well |  |
| Suitable for maintaining water quality over time |  |
| Clears water typically within 24-48 hours, faster than some claims of 30 minutes |  |
| Bulk purchase option provides cost savings and convenience for ongoing use |  |
| Does not cause skin irritation, unlike chlorine-based products |  |
| Provides a pleasant, soft aroma without harsh chemical smells, creating a spa-like atmosphere |  |

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*About this review: We pulled together findings from professional and user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.*