ROB_K wrote:

... I just love these "wonder" products...
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makes tap water safe by neutralizing chlorine, chloramines and heavy metals harmful to your fish while enhancing your fish's natural, protective slime coating. Specially formulated with natural biopolymers which support the development of beneficial filter bacteria for healthy, clear water
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Principle Ingredients: sodium hydroxymethane sulfinate, chelating compounds, polyvinyl pyrrolidones, seaweed biopolymers, organic hydrocolloids.
Sodium hydroxymethane sulfinate... (commonly used in cosmetics...)
Unstable under high heat... (admitable high)... and breaks down into...
Sodium Hydroxide... lye... a very strong pH base..
Formaldehyde... admittably used as an aquacultural bacterial treatment.. and to preserve specimens of dead aniamals...
And oxides of Sulphur... Sulphur Dioxide... rotten eggs...
Incompatible with... acidic pH compounds... oxidising compounds...an anti-oxident... sucks up free oxygen...
And Sodium and Ammonium Nitrate compounds...
Not a lot of beneficial stuff there for AP systems... other than the anit-bacterial properties... it'll kill any nasties... but I can't see how it promotes any "beneficial filter bacteria "...
What else... ahh...polyvinyl pyrrolidones... PVP...
Commonly used in...
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Technical
PVP is also used in many technical applications:
as an adhesive in glue stick and hot-melt adhesives
as a special additive for batteries, ceramics, fiberglass, inks, inkjet paper and in the chemical-mechanical planarization process
as an emulsifier and disintegrant for solution polymerization
as a photoresist for cathode ray tubes (CRT)
used in aqueous metal quenching
for production of membranes, such as dialysis and water purification filters
as a binder and complexation agent in agro applications such as crop protection, seed treatment and coating
as a thickening agent in tooth whitening gels
as an aid for increasing the solubility of drugs in liquid and semi-liquid dosage forms (syrups, soft gelatine capsules) and as an inhibitor of recrystallisation
as an additive to Doro's RNA extraction buffer
as a liquid-phase dispersion enhancing agent in DOSY NMR
Other uses
PVP binds to polar molecules exceptionally well, owing to its polarity. This has led to its application in coatings for photo-quality ink-jet papers and transparencies, as well as in inks for inkjet printers.
PVP is also used in personal care products, such as shampoos and toothpastes, in paints, and adhesives that must be moistened, such as old-style postage stamps and envelopes. It has also been used in contact lens solutions and in steel-quenching solutions. PVP is the basis of the early formulas for hair sprays and hair gels, and still continues to be a component of some.
As a food additive, PVP is a stabilizer and has E number E1201. PVPP is E1202. It is also used in the wine industry as a fining agent for white wine or some beers. Other references state that polyvinyl pyrrolidone and its derivatives are fully from mineral synthetic origin. Therefore, its use in the production should not be a problem for vegans.
In molecular biology, PVP can be used as a blocking agent during Southern blot analysis as a component of Denhardt's buffer. It is also exceptionally good at absorbing polyphenols during DNA purification. Polyphenols are common in many plant tissues and can deactivate proteins if not removed and therefore inhibit many downstream reactions like PCR.
In microscopy, PVP is useful for making an aqueous mounting medium.
No real binding of chlorine... (which has probably off-gassed by now anyway...

)... chloramines, or heavy metals... and certainly no beneficial bacteria...
Hummm... "chelating compounds, seaweed biopolymers"....
Might have some beneficial effects for fish tank biotics... and fish slime coat production...
"organic hydrocolloids".... hummm...
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A hydrocolloid is defined as a colloid system wherein the colloid particles are hydrophilic polymers dispersed in water. A hydrocolloid has colloid particles spread throughout water, and depending on the quantity of water available that can take place in different states, e.g., gel or sol (liquid). Hydrocolloids can be either irreversible (single-state) or reversible. For example, agar, a reversible hydrocolloid of seaweed extract, can exist in a gel and sol state, and alternate between states with the addition or elimination of heat.
Many hydrocolloids are derived from natural sources. For example, agar-agar and carrageenan are extracted from seaweed, gelatin is produced by hydrolysis of proteins of bovine and fish origins, and pectin is extracted from citrus peel and apple pomace.
Gelatin desserts like jelly or Jell-O are made from gelatin powder, another effective hydrocolloid. Hydrocolloids are employed in food mainly to influence texture or viscosity (e.g., a sauce). Hydrocolloid-based medical dressings are used for skin and wound treatment.
Other main hydrocolloids are xanthan gum, gum arabic, guar gum, locust bean gum, cellulose derivatives as carboxymethyl cellulose, alginate and starch.
Seems to all relate... along with the "chelating compounds"... to some seaweed extracts/colliods...
Sounds like a watered down version of Seasol/Maxicrop... with a bit of salt... Sodium + Chloride (from the chlorine in the water... (which will stimulate slime coat production...)
And some anti-bacterial agents.. to kill any bugs in the tank...
So yep.. probably good enough for the fish...
But "condition" your water... neutralize... chlorine, chloramines and heavy metals... nuh... bullocks...
"support the development of beneficial filter bacteria"... nuh.. bullocks... they have to come from some other source... they're not in this mix...

So you have "hard" water.... well that's probably why your pH rose slightly when you topped up...
But it rose only marginally... and hard water usually just means a high(er) mineral content... calcium, magnesium and iron... not harmful to fish.. and beneficial to plants....
Sounds like you could acheive the exact same benefits... cheaper... and be able to eat your fish...
By just adding some salt.. for your fish.. and Seasol/Maxicrop... for your plants...
