HMA vs RODI or RO?

[stingray keeper]

Ive got RODI that mixes with a small portion of my very hard well water into a resevoir for my auto water changes. The mix gives me a decent ppm and i also add stuff back to the end product to make it better suited to my livestock. What i want to get comments on is why HMA? I understand it to be like an RO with no membrane and no waste line. Anyone care to elaborate on their reason for liking HMA over RODI or RO. thanks

 

[Reedmaster16]

If I understand correctly you are currently mixing RO with your source water to reduce hardness in addition to adding back minerals after the water is mixed?

If you are "cutting" your well water with RO then their should be no reason to mix additives if your ratio of RO to well water is always accurate & consistent.


The very hard water will add back the required minerals, you are essentially diluting the hard well water with RO lowering GH, KH, TDS & conductivity to a level you deem acceptable. I assume you have the testing equipment on hand so just find a ratio of RO to well water that gives you the water parameters in the range you & your rays are aiming for.


Messing around with adding a number of products to the water to adjust PH or other things can be difficult to keep things constant. Just keep it consistent is the key, the rays wont react well to swings in PH or other water parameters. Make sure that any major changes are done gradually to limit stress.

 

[DB junkie]

I'd love to hear about the actual numbers...... Or what exactly is added back to the water to better suit livestock....



Anyone using HMA filters care to share some of their #s????

My understanding is HMA is just like our "drip system" filters - remove chlorine, chloramine, and sediment, but do very little to the actual measureable values of the water (TDS/Conductivity).

To me it would seem if your tap is proper PH/TDS/Conductivity then HMA is enough.

If the source water is really high PH/TDS/Conductivity then a HMA isn't going to do much to it, and will likely need RO/RODI intervention.

 

[DIDYSIS]

Im getting a tds meter this week as im playing in the salt water world now and have a full ro/di unit for the salt setup. Figure it would be fun to test everything else that is going through my ray tank as well for fun. Ill be sharing some info on the threads once I get it.

Sent from Note 2 mini computer

 

[yargnits]

i dont know anything about tds . but just going on the sound of it, wouldnt the sediment filter reduce the tds ?

 

[T1KARMANN]

As normal people don't pay any attention to what I say

Hma water is just like treated tap water

I am running 2 drips one hma one RO

It's very easy to set up and I'm having great results

All you do is

After the 3 pre filter if add a T connector from the T you have 2 feeds you take one to the tank like normal this will give you hma water

The second feed you take to a RO membrane then to the tank like normal

This will give you a 50/50 RO hma mix or if you use flow taps you can up or down the flow on each

It works great and no need to add anything back to the RO

Maybe if DB hadn't blocked me he may learn something


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[DIDYSIS]

Got my tds meter my tap water is 250. Tank water 255. Our water here in Utah is very hard and a ph of about 7.8

Sent from Note 2 mini computer

 

[DB junkie]

460 out of the tap here......

PH 8.4.

And for the record T1, I didn't block you. MFK did. I fear I may never learn anything from you now..... What will I ever do?

 

[yargnits]

As normal people don't pay any attention to what I say

Hma water is just like treated tap water

I am running 2 drips one hma one RO

It's very easy to set up and I'm having great results

All you do is

After the 3 pre filter if add a T connector from the T you have 2 feeds you take one to the tank like normal this will give you hma water

The second feed you take to a RO membrane then to the tank like normal

This will give you a 50/50 RO hma mix or if you use flow taps you can up or down the flow on each

It works great and no need to add anything back to the RO

Maybe if DB hadn't blocked me he may learn something


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would you get a 50/50 mix ?

you have one outlet split into two potentially spraying 100% filtered water.

one outlet has a restrictor on it --- a ro filter .

so one outlet is spraying maximium capacity and the other is pushing at reduced pressure through the ro membrane ?

i dont know and havnt testted but you might want to get a gph meter on both taps to check because i doubt is 50/50. form what ive read ro membranes are quite restrictive so ro versus no restriction would say to me that flow is greater in the unrestricted area .

i hope your not still using copper filters ( kdf ) at least

on another note. i think were due an update of your lovely fish house and fantastic stock

 

[T1KARMANN]

Yes it does work

As you have a flush kit on the membrane so you can slow the RO down that way if needed

First you have a booster pump before anything which lets out 80 psi you then reduce the flow on each outlet when needed

DB still playing with that silly reactor I see 6 months later and you still don't have it right
I see you was asking someone about sand filters the other day
I wonder why lol


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