I installed new SpectraPure RO/DI system and then added extra DI unit. My TDS meter measures about 10-15ppm at the input of my first DI cartridge and 0 at the output. I just measured PO4 in my RO/DI water and discovered that it is about 0.1ppm, which is bad. How do I improve my water ? Thanks.

So I'm about to set up a 75 gallon tank and up till now I've been getting my water from a local quality control lab that my mother works at which has been fine. Now that I'm setting up a 75 gallon Im gonna be a burden on her by getting so much so often so I need to get a Ro/Di unit. I have a...

How many of y'all just run straight pure water or water with a little bit of taste? Meaning no RO membrane just DI (also maybe a UV light as an extra stage). I am just asking, because I decided to just run DI. No, RO membrane with my system just the canisters needed for DI. I am doing just DI...

I work at a power plant that has its own water treatment facility. It makes very pure ro/di water. I was wanting to use this water for my nano tank, because I think it would be better than my lfs water or tap, but I'm not sure if it would be safe for the tank. Does anyone know anything about...

I purchased an ro/di unit. But i have used tap water on my existing reef tank. What is the best way to transistion to r/o water. My corals are not in too bad of shape but I do have a lot of algae issues.

hi, ive just got a quick question about reverse osmosis systems. I currently get my water pre mixed from my LFS which is 2 minutes away from me, im looking to get an RO unit myself but was wondering that once installed does the RO constantly churn the water out or can you turn it off and then...

Ok, so I've been buying RO/DI water to top my tank off between water changes from my LFS for $0.50/gal. I'm considering just buying a unit to skip the hassle of buying 5 gals every couple weeks, and so I could just mix my own SW rather than buying that too ($1.00/gal). My question is what...

I have a barely used WaterGeneral RO/DI System, model #RD-100. This link is a close approximation, but with only one resin housing, not two. Comes with a half-full bag of resin and the resin in the housing has only been used to filter about 20 gallons. So, it is essentially brand new, too...

Red Sea 5-in-1 Master Test Kit For Marine Aquariums Why test for pH and Alkalinity? pH is the measure of acidity of water. A pH reading of 7.0 is neutral, a pH higher than 7.0 is alkaline, and a pH lower than 7.0 is acidic. The ability of water to withstand changes in pH is called buffering...

Okay gang. as pointed out by ScruffyRubicon and seconded by marineduud. an area of Reef MSDS and i am thinking a instructuion manual area is a good idea. lets look at our reef equipment and things for or in our tank. the example for all of this was the OZONE accident. ScruffyRubicon gave this...

Hello everybody. As of today I have started my complete DIY system. First a little background info about myself and how this came to be: My first tank was a 55 gallon reef that I started back when I was 17 (now 22) and it went strong for three years. Being a student with three jobs was rough...

:) I love this site, I can ask my stupid little questions knowing I won't be yelled at. So I am about to start curing some rock. It came from a crashed system. It has been sitting in his carport for quite some time now. I have scrubbed it under warm running water. Am about to get the tub...

I've been thinking about something silly recently. I was having a discussion with friend today about water purity :D Lets say you were to fill a large plastic bottle with water and placed it in a plastic bag. You then placed this in your freezer. When it's frozen, you took it out of the...

Well, I thought I would post our 72 gallon bowfront. We started as fish only, so our bioload is pretty high since we've started adding corals. Fish, unless noted, there is only one of each; Yellow Tang Flame Angel Pajama Cardinal False Percula Wrasse? Purple tile fish 1-3 stripe, 1-blue...

Hi! We have finally decided that we will be starting a brand new reef tank. We've never done this before so it is totally new. We purchased a Top Fin Aquarium Starter Kit 20 gallons from Petsmart. It's still in the box. We are going to go with just a 20 gal. to add some beauty to our home...

I have had a terrible time with red slime. I don't have a reef tank. I started my tank in Novemeber. My fish are healthy and I have tried to stop the slime by alot of different suggestions. We have cut down on the light being on. We covered the windows to keep the light out in the room. We...

We have a lot of green algae in our tank. Is there anything that will eat it or is there something I can put in the tank that will destroy it with out hurting my fish, shrimp, or star fish? We are new at this and could really use some good advice. It's a 75 gal. saltwater tank. We've had...

We have been purchasing salt water from our LFS, but have thought about mixing our own. We can buy RO/DI water in bulk from the water store in town (much closer than fish store). Can someone run down the process of mixing the saltwater? I have ben searching threads and trying to piece it...

What do you guys think is better for your tank, two smaller water changes or one larger one during a weeks time? I've been doing smaller ones more frequently, it gives me a chance to turkey baste the rocks more often.

Can anyone recomend what cartridges I should get for my RO it is a 4 stage unit. I was thinking 1 micron sediment -->.5 micron carbon block --> 25GPD high S RO ---> DI chamber. Anyone have any other sugestions? My second choice would be just to buy a whole new set up for $140. Reef Aquarium...