water change

I have a 75 gallon tank. In 2 weeks I need to do a 75% water change after treating flukes with prazipro in my display tank. How do I do this, I don't have the space or bins to mix that much water ahead of time. So what do I need to do, to do this large of a water change safely for the fish. Do...

Since I have automatic water changes set up, the water it takes to vaccum out the sand seems like such a waste. Plus I have to make sure I have enough mixed salt water ready to replace what im going to suck up. If I don't then I have to wait 24 hours. Simply put, it's a hassle. Seems like a no...

Has anyone used 1 DOS to do auto water change on 2 different tanks? My thought is to use solenoid valves to control the water flow. Or to run parallel water Lines to each tank off the main lines from the DOS. If you have done this please let me know how you done it. Any thoughts?

Lately - after a couple items failed and having problems in the past with various algae outbreaks, chemical methods to control algae, etc etc. I've come to the conclusion that 'simpler is better' - So - for my current tank I have a skimmer, some carbon in the sump - and dose 2 part using weekly...

So in my previous thread, I had an ammonia issue that was out of hand. As suggested, I did a 100% WC and now i’m wondering when I should start adding fish back. If anyone has suggestions, let me know!

When I do large water changes, I have a large chalice coral (echinopora) that gets exposed to the air so it ends up producing a lot of mucus. When I fill the tank back up. This mucus flows throughout the tank. Last time, it ended up getting on an Acro and monti frag and killed some of the...

Setting up to reduce my nitrates which are at 40 ppm and I want to get them down to around 10 ppm. I currently have mostly soft and LPS corals, but tried introducing some Monti's, which are extending but I dont believe they are doing well. Additionally, my Phosphate is high so my assumption is...

I have a order of fish and some zoas coming in tomorrow night. Just tested all my parameters on the tank and I have a few questions. Salinity: 1.0245 Temp: 78 F Ammonia: 0 ppm Nitrite: 0 ppm Nitrate: 20 ppm I kinda wanna get my nitrates lower before the fish arrive. I did a 30% water change...

A follow up question to my fish having ich. I currently have lake Michigan water coming to my house. My friend told me it could be the reason my fish got ich. So I was wondering if it were possible to have a fish store test my water to confirm if it's safe or not? The reason I ask is because I...

Hi guys, so I am brand new to this community and I figured I’d ask a few questions. I have been keeping aquariums on and off most of my life. I just recently started getting back into the hobby and I set up a new 40 gallon FOWLR tank about a month ago. I used Fritz Turbostart 900 to cycle the...

A few months back I set up auto water changes on my Waterbox 130. It has worked amazingly well.. in theory. Back when I was doing bi-weekly 10-15% water changes, I would notice a happy shift in my tank after doing it. Corals and fish seemed to love the refresh, and things did well. With the AWC...

I started a 15 gallon reef tank about 3 weeks ago just using tap water with a water conditioner and everything is doing fine other then alge and I am aware i need RODI water. If i start doing water changes with RODI will it filter out my tap water ?

I started a 15 gallon reef tank about 3 weeks ago and used tap water with a water conditoner, everything has been doing good other then having alge issues and i am aware I should be using RODI water. If i start doing water changes with RODI from now on will that tap water be filtered out ?

Hi guys how often would you recommend I do a water change and how much water I have been doing 50L every 10 days it’s a 450 L tank thanks

I am looking to change out about 10 gallons in my 90 gallon reef *88 gallons=tank+fuge* housing some expensive sps frags. If my current DKH is 8.2 and the DKH of Reef Crystals is 13 would that be too much of a change? I did the math and doing a waterchange would add about .5 DKH for 10 gallons...

Is there such a thing as too much regular water change? Apart from the cost consideration, is changing 20% weekly, split over 7-days, better or worse that than say 10% once a week?

I wanted to document what I think are close $$$ numbers on the true cost of a 20g water change. I chose 20g bc on avg I think most ppl are around a 20g water change when done weekly, bimonthly, or monthly. TAP WATER TO RODI: Avg cost of tap water in the U.S. is around $2.50 per 1000 gal...

Hi All, I am hoping some of you can share some tips on doing water changes. I have a 150G DT, and am trying to figure out the best way to know when I have taken out 15 Gallons, or 30 gallons, so I know when I have taken out 10-20% respectively. I was thinking of just filling up a 5 gallon...

Do you prefer to feed your corals before your water changes? Some seem to prefer to reduce what stays in the water column after feeding by doing a water change after, others seem to look at it as leaving fresh food available for their livestock after a water change, and some feed their tank so...

I got a skimmer for my reef a few months ago for some reason I thought I could get away with doing my 10% weekly water change to 10% every 2 weeks when I got the skimmer. After reading more online I’m seeing I still need to do 10% a week or 20% every two weeks. I plan on moving back to 10% a...

Someone once said - nothing good ever happens fast in a reef - so... I have been busy with life and am now able to turn attention back to my 40g Reef. I have lost most LPS with the exception of shrooms which are quite happy with the mess. I have a Duncan that is hanging on. SG is on, pH @...

Everyone has a spare MJ pump in their old aquarium equipment bin. Why not put it to use on your next water change and clean out that sump with the MJV - MJ Utility Pump Vacuum Attachment by Compatible with 3/4in OD hose Add the vacuum attachment to any hose with a 3/4in OD and breeze...

How to Mix Saltwater for Your Aquarium: A Step by Step Tutorial Our best tips to save time and make mixing saltwater go smoothly!

dual head 100gpd Steiner pump. Works great, used for about a year. I used it for automatic water changes and it worked perfectly. Let me know if you have any questions. Thanks 300 tyd

So, I recently set up a 10 gallon tank next to my 20 gallon mixed reef. Originally the 10 gallon was a QT tank, but it has now served its purpose (I never needed to medicate) and I don't plan on adding any more fish to my 20 gallon. So I'm thinking of converting the small tank into a little...