What is Reddit's opinion of TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More?

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Sure. So ppm is parts per million of “substance” in the water, other than water. Since you’re just putting nutrients into your water, you can measure the concentration of nutrients by using a ppm meter.

So instead of just following the “two caps every other week or whatever, you keep your nutrients at a level appropriate for the plants you have in there.

TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More https://www.amazon.com/dp/B079DN9DRS/ref=cm_sw_r_cp_api_i_T778FF50VFAZ0TBFAKJ6?_encoding=UTF8&psc=1

TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More https://www.amazon.com/dp/B079DN9DRS/ref=cm_sw_r_apan_i_7NF66GZ1TRC8TCAEM58K

Used this the past couple years. Havnt had any problems. Don't cheap on ph. Ppm doesn't need to be as precise.

TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More (LX-TDS1) https://www.amazon.com/dp/B079DN9DRS/ref=cm_sw_r_cp_apan_glt_i_M6VZ2BZKK4F9G6C1QVM6

TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking https://www.amazon.com/dp/B079DN9DRS/ref=cm_sw_r_cp_apip_9hD1PvkHkvvIg

I use this one, seems to work great

If you can get a TDS tester, like this, and it's 0 TDS, I would think it would be fine. You can also test it for nitrate and phosphate.

Thanks! Do you have a preferred model or should I just go with this one?

TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More (LX-TDS1) https://www.amazon.com/dp/B079DN9DRS/ref=cm_sw_r_cp_api_glt_fabc_XMFSHZ8QPMMHPGTBV2G2?_encoding=UTF8&psc=1

TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More (LX-TDS1) https://www.amazon.com/dp/B079DN9DRS/ref=cm_sw_r_apan_glt_fabc_N1C0VHHWJQQYMH2QXPRW

But ur ec pen should have TDS to measure ppm

simple ec meter, maybe $15 online. something like this: TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More (LX-TDS1) https://www.amazon.com/dp/B079DN9DRS/ref=cm_sw_r_cp_api_glc_fabc_Z6MKAP4T7SHX7GW142PE

i use a more expensive ph meter that was around $50, and 3M instrument storage soaking solution to keep the electrodes working properly for your ph meter, it will help it last longer.

For what purpose? You can send a plastic bottle to Ward Labs and they will have results to you in a few days. You can grab a cheap TDS meter on Amazon if you just want to know how the RO system is working.

If you get some shrimp mineral rocks, a cuttlebone, crushed coral, or something similar that should balance out the negative buffering the active substrate is doing.

For GH/KH you can easily manage that by using a TDS meter ($14) to check your total dissolved solids, doing your water change using reverse osmosis / distilled water, and using a shrimp specific mineral mix to bring the TDS back up to what it was before the water change.

So long as the TDS isn't off from what it was for mare than ~20 minutes you will avoid any shock to the shrimp.

The meter reads instantly so it's MUCH easier than doing individual GH and KH tests, and using a pre-mixed mineral ensures that the exact ratio is already taken care of.

Get a TDS meter and use a GH+/KH+ to bring up the TDS to 220-300 PPM.

The pre-mixed minerals will keep everything in the correct range as long as the TDS is right.

That will be great for Neocaridinas.

Also when you do a water change make sure the water is the same temperature as the water in the tank, has no chlorine, and the TDS in the tank before the change matches the TDS after the change.

Rapid changes in TDS (if they aren't quickly corrected) will cause osmotic shock which can be fatal.

In my experience with soft water, it's normal. A softener removes the calcium from the water. It swaps it for sodium. There are a lot of other things in water besides calcium and those don't change. I use a fake chamois when I rinse my car for drying but still have some spots. My shower doors also get deposits.

I have friends who swear by a shower squeegee. They have the discipline to use it after every shower. I'm a space case so it doesn't happen here.

If you are interested, get a cheap Total Dissolved Solids meter like this:https://www.amazon.com/Lxuemlu-Professional-Temperature-0-9999ppm-Aquariums/dp/B079DN9DRS/ref=sr_1_4?crid=2SZ6CLMHRM1M8&dchild=1&keywords=dissolved+solids+water+tester&qid=1600810551&sprefix=dissolved+solids%2Caps%2C176&sr=8-4

My hard water is really hard but the soft water actually measures a higher TDS reading. Weird.

I use this tds meter. It shows both ec and ppm I think https://www.amazon.com/dp/B079DN9DRS/ref=cm_sw_r_fm_apa_i_YwqgFbZ7ZW1CG

Bought this: TDS Meter Digital Water: https://www.amazon.com/dp/B079DN9DRS/ref=cm_sw_r_cp_api_i_.4LgCbXD3GESG and tested myself while waiting for city kit. Kitchen sink water read 127. Brita filtered 52.