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Are you saying you have the membrane at the end? This is highly unusual. Any reason for this?

Some initial conclusions on how to resolve my concerns related to detectable chloramine post RO, following several chats with Chris/Airwaterice. He founded his RODI company 43 years ago, so I bet on his knowledge being accurate. Overall, Chris thinks the test shows a false positive result. He...

Since you live in the same area as @spuri87 , just trying to understand your system again - I assume you have 0 TDS vetted with two different TDS meter? In terms of sequence, can you confirm your system: Stage 1 - Sediment Stage 2 - Sediment Stage 3 - Catalytic carbon Stage 4 - RO membrane...

Lawrence, I would highly recommend buying one. I am really looking at indoor air quality differently since I use them, not only for reef tank purposes - specifically if you have guests in your house.

I believe you have to rethink your RODI needs. An RODI cannot be too big but too 'small', in my opinion. I have 8 stages for 27/28 TDS, and still need to make some adjustments. I think you should talk to someone who does this for a living, so you are not spending more money than needed, but...

It is clear that the DI is exhausted. But this is more likely just a symptom, not the root cause. For comparison - I have 27 TDS water and I am at 2500 gallon on my three-stage DI and they are used by less than 30%. Let's not forget his carbon does not filter out chloramine, as stated on the...

So maybe going back to the drawing board on what you are trying to resolve. You have a) relatively high TDS and b) chloramine in the water which needs to be removed, depending on your water suppliers reports, if high also PH, might be even harder to remove than it is already compared to...

I am not sure if this will fit to your existing setup tbh. Also, fully agree with @PjFish sentiment. I did miss are running a larger waterbox so this RODI is definitely not proportionate to your tank, specifically if you need to make more water.

To Rich’s point, as I mentioned above, your DI resins are most likely depleted, but the question is why. As I said, the carbon does not break down chloramines effectively, impacting the membrane which impacts the DI. This would be my working assumption. If you are looking for a totally new...

First, the filter I recommended might not fit your system. They might actually not offer a suitable carbon for your system but please check. I would replace the carbon first and measure TDS past RO. If the rejection rate is still only at 75% as it currently seems to be, the membrane is probably...

Not sure if you saw this, but for the past few days, we discussed the topic of chloramine removal here. https://www.bareefers.org/forum/threads/challenges-in-removing-chloramine-in-rodi-setup.39238/page-2#post-561696 I will add a few more details later today. In your case, if you did not use...

Or maybe you buy a used Reefi Light with a 120-degree reflector - looking to others if this is the right reflector size - I believe @derek_SR was selling his? This would be great light for a budget prize.

It is a 'fertilizer', which they even openly state in their product description. I do not believe a 'fertilizer aproach' is advisable for trace element dosing except in some very limited circumstances, i.e., you have so much crop that you know it will all be absorbed by all livestock immediately.

Welcome. I assume you are referring to the swap, which is members-only. You could become a member and attend though.

Should be 1:50. Also, something that has not been discussed here, but the best way to use LC is in combination with GFO in a media reactor. Added immediately before the intake. Increases GFO power seven times without detectable LC in the water (Armin Glaser). Re ChaetoGro - oh boy, not a fan...

Bought this book used and it arrived today. Probably the only copy still available. 26 year old/1999 published, no pictures, hardcore. No fluffy stuff in there, only what matters - skimming and carbon. :). Oh, and fun fact. The website which previously sold the the carbon you recommended was...

Good point. I was thinking of adding this to a prefilter stage though.

That is the reason I do not prefer or would recommend LC as the tool of choice for phosphate removal. It can be easily misused and bad things (to fish) happen then. Your tank is much smaller than Derek‘s tank and your skimmer might not be as powerful as his, so the likelihood to overdose it in...

Wow, this is out of the box. Is this because I assume it significantly lowers PH, which makes it much easier for carbon to remove chloramine. Interesting.

Should not be at that level, and corals generally should not be impacted to at least 20 ug/L or potentially much higher. If you are having issues with corals, it is most likely not due to the lanthanum showing on your ICP which are really tiny amounts measured here. 1 ug/L is only one...