Results for "LSI"

Water Chemistry Medium 45 minutes 158 👍 0

Do Fiberglass Pools Need Calcium Hardness? Complete Guide

Pool builder says my new fiberglass shell doesn't need calcium hardness adjustments like a plaster pool does. But the water test shows 150 ppm and the internet says that's too low for any pool. Who's right here — does fiberglass actually need calcium or not?…more

Read answer

Water Chemistry Medium 30 minutes 147 👍 0

Do Vinyl Pools Need Calcium Hardness? Complete Guide

Finally ready to pull the trigger on a vinyl liner pool but the salesperson won't stop pushing calcium hardness products — legitimate necessity or expensive upsell? Keep seeing different numbers online - some say treat it like any other pool, others say vinyl needs different levels.

What's the right calcium hardness range for vinyl pools? And is it actually different from concrete/plaster pools?…more

Read answer

Water Chemistry Medium 2-4 hours 132 👍 0

Do Vinyl Pools Need Calcium? Complete CH Guide 2024

Before our big pool party this Saturday, I'm getting completely contradictory advice about whether my vinyl pool even needs calcium added! I keep reading conflicting info online - some sources say vinyl pools don't need calcium at all, others say they do but at different levels than concrete pools. My test strips show I'm sitting around 100 ppm right now and I'm not sure if that's too low or if I even need to worry about it.

I've been dealing with some metal staining on my vinyl liner and wondering if low calcium could be making it worse by causing corrosion. But I'm also terrified of adding too much and ending up with scaling or that dreaded cloudy water that takes forever to clear up. What's the sweet spot for calcium hardness in vinyl pools, and is it really different from other pool types?…more

Read answer

Product Ranking 10 compared

Best Pool Water Test Kits

4.6 (45,200 reviews)

Water Chemistry Easy 30 minutes 131 👍 0

Do Liner Pools Need Calcium? Complete Guide for Vinyl Pools

Nobody at the pool store gives me a straight answer about calcium in vinyl pools — got my test kit ready and I'm done with their upselling games. They keep pushing calcium hardness increaser saying I need to maintain 150-300 ppm, but I've heard that liner pools don't need as much calcium as plaster pools.

I'm trying to figure out what's actually necessary versus what's just upselling. Can I get away with lower calcium levels since I have a vinyl liner, or will this mess up my water balance and damage my equipment? I'd rather handle this myself instead of dropping more money at the pool store if possible.…more

Read answer

Water Chemistry Easy 30 minutes 121 👍 0

Do Fiberglass Pools Need Calcium? Complete Guide 2024

Since I'm dropping serious money on a fiberglass pool installation, I keep getting conflicting advice about calcium — do I actually need it or are pool stores just pushing expensive chemicals? I keep reading conflicting information - some sources say fiberglass pools need the same calcium as concrete pools, others say they're completely different.

My test strips show my calcium hardness is around 120 ppm right now, and I'm worried I'm either going to damage my equipment or mess up my water chemistry even more. Do fiberglass pools actually need calcium, and if so, what's the proper range I should be targeting? I just want to get this right once and for all!…more

Read answer

Water Chemistry Easy 20 minutes 120 👍 0

Why Pool Alkalinity Gets High: 7 Common Causes Explained

Replaced my pool test strips last month but my 3-year-old liquid test kit is still showing crazy high alkalinity readings — time for a new kit? My kids swim almost daily during summer, so I want to make sure the water is safe for them.

I've been trying to figure out what might be making the alkalinity rise so I can prevent it from happening again. Is it something I'm adding to the pool? Could it be our new fountain feature? I just want to understand the common causes so I can keep the water balanced and safe for my family.…more

Read answer

Water Chemistry Medium 45 minutes 115 👍 0

Do Pools Need Calcium? Complete Hardness Level Guide

Noticed my 15,000 gallon inground pool is still etching the plaster walls even though pH and chlorine levels are perfectly balanced. Have a plaster pool and not sure what levels to target. Also curious if vinyl and fiberglass pools need different ranges.

What happens if calcium gets too low? Will it damage my equipment or pool surface?…more

Read answer

Water Chemistry Medium 30 minutes 96 👍 0

Does My Pool Need Calcium? Complete Hardness Guide

Water test came back saying my calcium hardness is at 120 ppm and the pool store guy looked at me like my plaster was about to dissolve. But the pool looks perfectly fine to me — no etching, no rough spots. Does calcium hardness actually matter that much or is this just a way to sell me more chemicals?…more

Read answer

Loading more Q&A...

You've seen all 8 Q&A articles!