United Chemical No Mor Problems, 1 Gallon | NMP-4GAL
United Chemical
SKU: NMP-GAL-C4
United Chemical No Mor Problems® Preventative Algaecide & Clarifier – 1 Gallon (NMP-4GAL)
United Chemical No Mor Problems® (NMP-4GAL) is a concentrated preventative algaecide formulated to help stop algae before it starts. It’s designed for routine use to inhibit green, mustard (yellow), and black algae while also helping “polish” water for improved clarity. Many pool owners use it to reduce time spent fighting recurring algae and to help lower the frequency of heavy corrective treatments.
Key Features
- Preventative algaecide – helps inhibit green, mustard/yellow, and black algae growth
- Acts as a water clarifier – helps improve sparkle and overall water clarity
- Filter aid benefits – can help reduce filtration time and keep water looking more polished
- Compatible with chlorine pools, salt systems, and bromine pools
- Intended for ongoing maintenance to reduce “problem pool” cycles and recurring algae events
Product Details
- Brand: United Chemical
- Product: No Mor Problems®
- Type: Preventative algaecide + clarifier / filter aid
- Container Size: 1 Gallon
- Part Number: NMP-4GAL
- Pool Types: Residential pools (all common pool surfaces)
How to Use
- Use as part of a weekly maintenance routine to help prevent algae from taking hold.
- Add with the pump running and distribute around the pool perimeter or in front of a return.
- For best results, maintain proper circulation and balanced water chemistry (especially sanitizer level and pH).
- If algae is already visible, treat the algae first (shock/cleanup), then resume preventative dosing.
Why Pool Owners Use It
- Helps keep pools looking clear and clean with fewer surprise algae blooms
- Often used to reduce chlorine demand and cut down on the need for frequent corrective treatments
- Helps support filtration by improving how fine debris is captured/cleared
Related Products
- No Mor Problems (Other Sizes / Options)
- Pool Shock (Chlorine Shock)
- Algaecides (Maintenance & Treatment)
- Pool Clarifiers
- Pool Test Kits & Test Strips
- Filter Cleaners (Cartridge / DE / Sand)
Maintenance Tips
- Prevention works best when sanitizer levels stay consistent—avoid long periods of low chlorine/bromine.
- Brush “dead spots” weekly (steps, corners, behind ladders, around lights) where algae commonly starts.
- Keep filters clean—restricted flow makes algae prevention harder and can reduce chemical effectiveness.
- If you fill with well water or metal-prone water, consider adding a sequestrant to reduce staining and water discoloration.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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